ECA review 3rd hour
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a small section of chromosome that determines a specific trait of an organism? | Gene
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| What is the study of how traits are passed from parents to offspring? | Genetics
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| Genes that keep other genes from showing their traits are? | Dominant Genes
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| An organism with two dominant genes for a trait is? | Pure Dominant
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| What is the name for the genes that do not show when dominant genes are present? | Recessive Genes
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| An organism with two recessive genes for a trait is said to be? | Pure Recessive
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| What is it called when an individual carries a dominant and a recessive gene for a trait? | Heterozygous
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| What is a way to draw out which genes can combine when egg and sperm join? | Punnett Square
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| Who was an Austrian who saw certain traits in the garden pea plants he grew? | Gregor Mendel
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| What is the large round part in the center of the cell? | Nucleus
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| What two types of cells can a sex cell be? | Egg Cell and a Sperm Cell
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| Draw a Punnett Square using Aa for the father and aa for the mother. | a a A Aa Aa a aa aa
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| What cells are responsible for passing traits from one generation to the next? | Sex Cells
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| How many different kinds of body cells do we have? | 200
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| How many chromosomes do sex cells have? | One of each kind- half as many as bod y cells
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| How are traits passed from their parents to their offspring? | Genes
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| In a Punnett Square what does the capital letter stand for? | The Dominant Gene
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| In a Punnett Square, what does the lower case letter stand for? | The Recessive Gene
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| What method did Mendel use when experimenting with his pea plant? | The Scientific Method
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| In a punnett square what would a heterozygous individual show? | Uppercase letter, lower case letter – Aa
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| What different traits did Mendel study in his pea plants? | color of peapod; shape of pea; color of pea; color of flowers
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| Observed results of genetic traits can be? | seen
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| Genes are found in which part of the cell? | chromosomes
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| Which cell part is the smallest? | the gene
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| Each body cell has how many genes for each trait? | two
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| How many chromosomes should a human body cell have? | 46
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| What do the letters outside the punnett square stand for? | genes in eggs and sperm
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| What do the letters inside the punnett square stand for? | the genes in offspring
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| A person is having two genes that are alike is…? | pure
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| Long rod-shaped bodies inside a cell’s nucleus are called? | chromosomes
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| What is a group of living things of the same species? | Population
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| The movement of animals out of an area is called? | Emigration
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| What is a movement of animals in to an area called? | Immigration
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| Any condition that keeps the size of a population from increasing is called? | limiting factors
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| What are two ways to count a population? | Tagging, leg bands, radio transmitters, painting trees, or ribbons
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| What is an advantage of a species staying in a group? | finding/hunting food together, protection
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| What is the struggle among organisms to get their needs for life? | competition
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| What are two examples of groups of animals? | herds, packs, flocks, clumps
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| All the living things in an area that depend upon each other is a? | community
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| What is a place where a plant or animal lives? | habitat
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| What is a job of the organism in the community? | niche
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| Animals that eat only plants are? | primary consumers
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| What are animals that eat other animals? | secondary consumers
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| What are living things that get their food from breaking down dead matter? | decomposers
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| What are 3 groups niches can be divided into? | producers, consumers, decomposers
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| What are organisms that make food in a community? | producers
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| Organisms that eat other organisms are? | consumers
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| What is a pathway of energy and materials through a community? | food chain
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| Food chains connected in a community are? | food web
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| What is a diagram that shows energy loss in the food chain? | energy pyramid
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| What is the first group in a food chain? | producers
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| The second group in a food chain is? | consumers
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| What are the last two groups in the food chain? | secondary consumers, decomposers
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| What do organisms get energy from? | food
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| How do producers make food? | use light
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| Most energy is lost as? | heat
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| Where is the most available energy found on the energy pyramid? | bottom, producers
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| What is a relationship in which two organisms benefit from each other? | mutualism
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| A relationship in which two organism live in a community and one benefits while the other is not harmed is? | commensalism
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| What is a relationship between two organisms in which one is helped and the other is harmed? | parasitism
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| What is a predator – prey relationship called? | predation
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| An animal that hunts, kills, and eats another animal is called what? | predator
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| What is an animal that the predator kills and eats called? | prey
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| What is an organisms called that a parasite lives on? | host
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| Name two types of parasites. | ring worm, tape worm, ticks, fleas head lice, body lice, bacteria
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| What is a community interacting with the environment? | ecosystem
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| What is the study of how living things interact with each other and with their environment? | ecology
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| What is the reusing of nitrogen in an ecosystem? | nitrogen cycle
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| What is the path that water takes through an ecosystem? | water cycle
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| What are the changes that take place in a community as it gets older? | succession
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| What is the last stage of succession in a community? | Climax community
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| What is the name of the water in the air that falls to the earth as rain or snow? | precipitation
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| The average light, temperature, and precipitation in an area taken over many years is called? | climate
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| What is a land area with a distinct climate and with specific types of plants and animals? | biome
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| Which biome has cacti and small bushes? | desert
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| What is biome has tree frogs, birds, and monkeys? | tropical rainforest
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| What is the Earth’s largest ecosystem? | ocean system
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| Water ecosystems are divided into what 2 categories? | fresh water and salt water
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| In the later stages of an older pond, what animals are usually found in it? | turtles and frogs
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| What is the first step in Land Succession? | bare soil, and after a few weeks or months, weeds
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| Which biome has polar bears and caribou? | tundra
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| What are most plants categorized as? | producers
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| What has its own distinct producers, consumers, and decomposers? | biome
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| Which communities go through succession? | all communities
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| If a community is not disturbed, what begins to form? | a forest
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| Producers, consumers, and decomposers make up what part of an ecosystem? | living
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| Soil, air, water, light, and temperature determine what about an organism? | where it can live
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| Air is made up of what 3 gases? | oxygen, nitrogen, and carbon dioxide
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| What is necessary for photosynthesis to take place? | air, light, water, carbon dioxide, and chlorophyll
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| Plants use what from the sun to make food? | light
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| Producers transfer what to other living things through food chains? | energy
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| ______ and _______ are related to each other? | light and temperature
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| Temperature and light are factors in the ________ cycle? | water
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| What does your immune do for your body? | keeps it free from disease
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| What system fights off disease? | immune system
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| Chemicals that help destroy bacteria or viruses are called ____? | antibodies
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| Foreign substances, usually proteins that invade the body and cause disease are called___? | antigens
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| Since the immune system has a memory how long will the white blood cells produce antibodies? | months or years
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| The ability of a person who once had a disease to be protected from getting the same disease again is called the ___? | immunity
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| What kind of disease is AIDS? | Immune system
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| How is AIDS caused? | virus that reproduces only inside one kind of white blood cells
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| A measuring system based on units of 10 is called ___. ? | International system of Units
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| What is the length? | distance from one point to another
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| The amount of space a substance occupies is called ___? | volume
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| How is mass measured? | comparing an object of unknown mass to an object of known mass
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| What does it mean to group things based on similarities? | Classify
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| What is a feature that something has? | Trait
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| What is the largest classification group of all living things? | Kingdom
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| What is the largest group within the classification of a kingdom? | Phylum
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| What is the largest group within the classification of a phylum? | Class
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| What is the largest group within the classification of a class? | Order
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| What is the largest group within the classification of an order? | Family
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| What is the largest group within the classification of a family? | Genus
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| What is the smallest classification group of living things? | Species
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| What is the genus and species name together called? | Scientific name
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| In one of the five kingdoms what is a one celled organism that doesn’t have a nucleus? | Moneran
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| In one of five kingdoms what is the mostly single celled organism that has nucleus and other cell parts? | Protist
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| In one of the five kingdoms what is an organism that has cell wall and absorbs food from their surroundings? | Fungi
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| What is an organism that is made up of many cells that has chlorophyll and can make their own food? | Plant
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| What is an organism that has many cells, cannot make their own food, and can move? | Animal
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| Who was one of the first people to classify living things into two groups? | Aristotle
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| Who placed living things into two main kingdoms? | Linnaeus
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| What names are commonly used in everyday language for animal species? | Common
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| What types of scientist have a system for grouping living things? | Biologist
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| Why do we classify everyday things? | To make easier, shows certain traits, and puts organisms in order
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| What are the three different groups that Aristotle classified animals in? | Land, air, water
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| What class is always written first in a scientific name? | Genus
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| Put the classification system in order. | Kingdom, phylum, class, order, family, genus, and species
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| What is the kingdom name to which a house cat belongs? | Animal
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| What do lions, deer, and octopi have in common that a tree doesn’t? | All animals
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| What makes up a scientific name? | Genus and species
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| Why is the horseshoe crab classified with spider? | Body chemistry
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| What is a horse more related to? | Donkey
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| What type of bacteria lives in unusual places on Earth? | Archaea
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| What are single celled, have a nucleus, have chlorophyll, and take food from surroundings? | Protist
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| What is a one celled organism, no nucleus, lacks most cell parts, and only has two phyla? | Moneran
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| What has chlorophyll, can make their own food, and cannot move? | Plant
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| What kingdom has all consumers? | Animal
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| A monerean has only two phyla. What are they? | Bacteria and blue-green bacteria
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| Which two scientist both grouped plants and animals as classification groups? | Linnaeus and Aristotle
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| Which scientist grouped plant and animals into two kingdoms? | Linnaeus
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| How is a house number on a street compared to the classification group species? | Both the smallest groups
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| How many classification groups are there? | Seven
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| How are prokaryotic and eukaryotic cells different? | Prokaryotic cells do not have a nucleus. In eukaryotic cells, the nucleus separates the DNA from the rest of the cell.
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| Cells that enclose their DNA in nuclei are called ___________. | eukaryotic cells
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| Cells that do not have nuclei are called _____________. | prokaryotic cells
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| Where is the DNA in prokaryotic cells? | floats freely in the cell
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| What are the activities that prokaryotic cells do? | grow, reproduce, respond to the environment, and glide along surfaces or swim through liquids
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| The living things that we call bacteria are _____________. | prokaryotes
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| How many structures and membranes are inside eukaryotic cells? | dozens
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| How is a bacterium easily destroyed? | antigens and antibodies on the surface of a white cell fit together correctly
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| How can your immune systems memory be refreshed? | by getting shots
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| What does AIDS stand for? | Acquired Immune Deficiency Syndrome
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| Is there a cure for AIDS? | no
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| Who uses this type of measurement? | scientists
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| What is the SI unit of length? | meter
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| What is the SI unit of volume? | cubic meter
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| What is the instrument used to measure mass? | balance
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| Put the SI units in order from least to greatest? | milli, centi, deci, (base) deka, hector, kilo
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| Dimples are ______ | dominate trait
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| Freckles are ______ | dominate trait
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| Curly hair _____ | dominate trait
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| Straight hair ______ | recessive trait
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| Without dimples ______ | recessive trait
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| Attached ear lobes ______ | recessive trait
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| Short eyelashes _______ | recessive trait
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| A case in which neither gene is totally dominate to the other | incomplete dominance
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| A genetic disorder in which all the red blood cells are shaped like sickles | sickle-cell anemia
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| Each human had 23 ____ & _____ | egg and sperm
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| Each human body cell had 23 pairs which is ______ in each human body cell | 46 chromosomes
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| Different organisms have different ____ of chromosomes | number
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| _____ Cells have 23 chromosomes not paired | sex
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| ______ Cells have 46 chromosomes arranged in 23 pairs | body
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| In humans a special pair of chromosomes determines the _____ | sex
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| The four different blood types are | A, B, AB, O
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| Females have two genes for each _____ because females have 2x chromosomes | trait
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| What is the way of looking at the chromosomes of a fetus? | amniocentesis
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| What is the sex chromosome of a female called? | X-chromosome
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| What is the sex chromosome called that is only found in males? | Y-chromosome
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| What are the chromosomes that do not determined the sex of a person called? | autosomes
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| What is the disorder in which red and green look like shades of grey or other colors? | color blindness
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| What is a genetic disorder that is also called word blindness? | dyslexia
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| What is the use of genetics to predict and explain traits in children? | Genetic counseling
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| What is the diagram that can show how a certain trait is passed along in a family? | Pedigree
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| What is a way of looking at the chromosomes of a fetus? | amniocentesis
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| What chromosome is the gene for color vision on? | X only
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| What are the sex chromosomes for a human male? | Xy
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| A mistake in chromosome number can occur during _____ | meiosis
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| What is a genetic disorder that harms brain cells? | PKU
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| It is possible for a female to have what kind of color blindness? | Red-green
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| In cows, red hair shows incomplete dominance over white hair. A cow, heterozygous for the trait of hair color would have _____ hair | mixed red and white
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| Cell reproduction in which two identical cells are made from one cell? | Mitosis
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| Cells that make up most of the body, such as the skin, blood, bones, and stomach? | Body cells
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| The two strands of a chromosome after it becomes doubles? | Sister chromatids
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| Reproductive cells produced in sex organs? | Sex cells
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| A kind of cell reproduction that forms eggs and sperm? | Meiosis
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| The stage in life when a person begins to develop sex cells? | Puberty
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| Male sex organs that produce sperm? | Testes
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| The female sex organs? | Ovaries
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| Small cell formed during meiosis in a female? | Polar body
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| Disease in which the body cells reproduce at an abnormally fast rate? | Cancer
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| What forms all body cells? | Mitosis
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| When does mitosis begin? | before you are born
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| When does mitosis end? | when you die
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| Name some of the parts of an animal cell? | Nucleus, chromosomes, cytoplasm, centrioles, nuclear membrane, cell membrane
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| What surrounds an animal cell? | cell membrane
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| What is most of the material inside an animal cell? | cytoplasm
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| What surrounds the nucleus? | nuclear membrane
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| In the first step of mitosis what doubles? | chromosomes
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| What is the exact copy of the original chromosome? | Chromatid
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| What doubles before mitosis begins? | centrioles
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| What begins to shorten and thicken during mitosis in the first part of step 1? | Sister chromatids
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| What begins to break down during step 1 of Mitosis? | nuclear membrane
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| What moves away from each other during step 1 of mitosis? | centrioles
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| What forms between the centrioles in step 1 of Mitosis? | fibers
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| What are the fibers made of? | Strands of protein
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| In step 2 of Mitosis what moves to opposite ends of the cell? | centrioles
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| What attaches to the fibers in step 2 of Mitosis? | sister chromatids
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| What gets pulled toward the center of the cell in step 2 of Mitosis? | sister chromatids
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| At the end of step 2 in Mitosis what is lined up a crossed the cell? | sister chromatids
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| At the beginning of step 3 in Mitosis what is pulled apart by the fibers? | sister chromatids
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| In step 3 of Mitosis what is being pulled toward the centrioles? | sister chromatids
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| In step 4 of Mitosis what begins to disappear? | fibers
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| In step 4 of Mitosis what begins to reform? | nuclear membrane
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| The cell membrane begins to pinch in until what is divided in half? | cytoplasm
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| At the end of step 4 of Mitosis what has been formed? | 2 new cells
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| What do the 2 new cells have the same of? | chromosomes and number of chromosomes
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| What are the benefits of Mitosis? | Mitosis helps us grow by producing new cells, replaces cells lost through cell and death and injury
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| Sperm are sex cells made by the? | male
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| An egg is a sex cell made by the? | female
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| During meiosis the four chromosomes make up what? | two matching pairs
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| During meiosis a cell divides how many times? | twice
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| The first time a cell divides, each chromosome in a pair moves away from its? | partner
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| Each chromosome of a pair goes to a different? | cell
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| The sister chromatids stay joined together and then two cells do what? | divide again
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| How many chromosomes are in each of the four final cells? | two
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| The number of chromosomes in each cell is what the original number? | ½
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| The original cell started with how many chormosomes? | four
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| Each new cell now has only how many chromosomes? | two
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| In step one of meiosis the sister chromatids shorten and do what? | thicken
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| In step two of meiosis the nuclear membrane begins to? | break down
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| The centrioles begin to move away from one another and form what? | fibers
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| The matching chromosomes now come together to form? | pairs
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| The centrioiles have moved to what end of the cell? | opposite
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| The sister chromatids come attached to the? | fibers
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| Fibers move the two pairs of matching chromosomes to the what of the cell? | center
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| Fibers move the matching chromosomes what? | apart
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| The cell membrane begins to pinch the cell into two and divides the cytoplasm in? | half
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| Two new cells have now? | formed
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| The centrioles _____ and fibers form again? | double
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| A new nuclear membrane _____ form at this time? | doesn’t
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| The centrioles move apart, and the fibers are formed ____ them? | between
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| The fibers connect to the sister chromatids at the point where the chromatids are? | joined together
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| The sister chromatids are pulled to the ___ of the each cell? | center
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| The fibers pull each ____ of the sister chromatids apart and to opposite ends of the cell? | strand
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| Each sister chromatid is an ____ copy of just one of the original chromosomes? | exact
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| The nuclear membrane begins to reform around each new set of? | chromosomes
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| Cell membranes begin to pinch each cell in two along the? | center
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| Sperm and what are formed during meiosis? | egg
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| Sperm and egg have how much the number of chromosomes found in the body cells? | half
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| Sperm and egg both begin to develop by meiosis at what? | puberty
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| What is the stage in life when a person begins to develop sex cells? | puberty
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| Are eggs larger or smaller than sperm? | larger
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| Each sperm has a what? | tail
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| The sperms tell helps it to do what? | move
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| Sperm forms in the what? | testes
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| Testes are the male sex organs that produce what? | sperm
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| Eggs are formed in the what? | ovaries
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| Ovaries are the what sex organs? | female
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| Meiosis in males occurs all the time from the beginning of what? | puberty
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| What is a small cell formed during meiosis in a female? | polar body
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| The polar body divides and does what? | dies
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| The large cell that remains forms another what when the cell pinches in half again? | polar body
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| The third polar body also does what? | dies
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| The large cell that remains becomes the what? | egg
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| What is formed once a month from the onset of puberty? | egg
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| When sperm and egg join the chromosomes from each cell also do what? | come together
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| The new organism has a complete set of chromosomes in each of its what? | body cells
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| How much of the chromosomes in the organism come from the father? | half
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| What are two differences in plant and animal mitosis? | plants cells lack centrioles and at the end of cell division a cell wall is laid down
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| What is the process of becoming older? | aging
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| What are some signs of aging in humans? | loss of hair, wrinkled skin, and loss of calcium in bones
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| What have regular rates of reproducing? | healthy cells
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| What undergoes mitosis every twenty days? | skin cells
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| What may undergo mitosis once every two hundred days? | liver cell
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| What increases the number of cells? | rapid mitosis
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| What parts of the cell change during rapid mitosis? | shape and nuclei
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| What are three known causes of cancer? | chemicals, radiation, viruses
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| What may happen to the cells if they are in contact with poisonous chemicals for a long time? | they might become cancer cells
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| If a person spends to much time in the sun? | the person may get skin cancer
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| Why is it so difficult to cure cancer? | so many causes of cancer are unknown
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||||
| Give an example of how a new species could form… | 1) A barrier forms 2) Living in different environments 3) Show different traits
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| Animals that can become trapped in frozen ice or mud, and insects can get trapped in sap are considered to be what? | Fossils
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| Name one effect of mutations. | 1) They could lead to a formation of a new species 2) An animal could become less adapted to its environment 3) An animal or insect could die because it cannot survive in its environment
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|
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| How would being a white deer help you survive in the winter? | Your fur color helps you blend in with the snow.
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|
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| Living things overproduce…what does it mean? | living things create more offspring than survive.
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|
||||
| How are vestigial structures evidence of evolution? | some animals have them and need them but we do not therefore… evolution.
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|
||||
| One flower opens during the day and one opens at night, which one is more likely to be pollenated by a moth? | the one open at night
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|
||||
| Give four examples of evolution. | 1) Changes in fossils 2) Similarities in embryos 3) gene code 4) vestigial structures
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|
||||
| Name one vestigial structure in the human body. | 1) Remains of third eyelid, appendix, etc.
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|
||||
| How are fish, frog, turtle, bird, and rabbit embryos similar? | They have spines, tails, ears etc.
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|
||||
| Two robins fighting over a worm is an example of what? | competition
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|
||||
| True or false, a change in climate may bring about a new species? | True
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|
||||
| Which layer of sedimentary rock has the most complex life forms? | the top layer
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|
||||
| What are mammals with eyes that face forward, well developed cerebrum, and thumbs that can be used for grasping? | Primates
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|
||||
| What mammals have a tail that can grasp like a hand and nostrils that open upward? | New-world monkeys
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|
||||
| What mammals cannot grasp with their tails, if they have one, and nostrils that open downward? | Old-world monkeys
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|
||||
| What are traits that help living things survive in their environment? | Adaptations
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|
||||
| The theory that living things over produce, that there is a variations among offspring, there is a struggle to survive, and natural selections is always taking place was developed by whom? | Charles Darwin
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|
||||
| What is the change in hereditary features among animals in the same species over time? | Evolution
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|
||||
| A trait that makes an individual different from other species is? | Variation
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|
||||
| The struggle among living things to get their needs for life is? | Competition
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|
||||
| What are the remains of once living things? | Fossils
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|
||||
| Rocks that form from layers of mud, sand, and other particles are called ___________ _____? | Sedimentary rocks
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|
||||
| What is the process in living things surroundings that determines if it will or will not survive and reproduce? | Natural selection
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|
||||
| A group of living things that can breed with others of the same kind and produce fertile offspring are called what? | A species
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|
||||
| Being able to reproduce by forming egg and sperm cells is what? | Fertile
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|
||||
| What are body parts that no longer have a function are called _________ __________? | Vestigial structures
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|
||||
| In a place with dark soil, which mouse will be better able to survive, the light mouse or the dark mouse? | Dark mouse
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|
||||
| Where is the oldest layer of rock with the oldest fossils found? | Bottom because it was formed first
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|
||||
| Changes in fossils, similarities among embryos, gene code, and vestigial structures are all evidence of what? | Evolution
🗑
|
||||
| Smoke and fog combined | smog
🗑
|
||||
| Means poisonous | toxic
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|
||||
| Molecule made of three oxygen atoms | ozone
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|
||||
| Chemicals used to kill unwanted pests | pesticides
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|
||||
| Something that can be broke down by microbes into harmless chemicals | biodegradable
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|
||||
| Rain that has a ph. Level between 1 and 5.5 | acid rain
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|
||||
| Toxic wastes made when paints and inks are made | pcbs
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|
||||
| Chemical sprays used to kill insects | ddt
🗑
|
||||
| Trapped heat that may cause temperatures to rise slowly | greenhouse effect
🗑
|
||||
| A very bad problem related to pollution | acid rain
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|
||||
| A species in danger of becoming extinct | endangered
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|
||||
| A species close to being endangered | threatened
🗑
|
||||
| Wearing a way of soil | erosion
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|
||||
| Material that settles at the bottoms of the streams | sediment
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|
||||
| Making surrounding unhealthy and dirty | pollution
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|
||||
| Remains of creatures that lived long ago, and remains are used for energy | fossil fuel
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|
||||
| How much of the earth is covered in water | 70%
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|
||||
| When soil dries up it | erodes
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|
||||
| Any part of the earth used by human | natural resources
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|
||||
| All living things use for respiration | oxygen
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|
||||
| What do power plants put into the air | sulfur
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|
||||
| What can kill insects without hurting other creatures | bacteria
🗑
|
||||
| What’s the process of reusing things | recycle
🗑
|
||||
| What are the three R’s | reduce, reuse, and recycle
🗑
|
||||
| How many trees are saved if we recycle the Sunday paper | 500,000
🗑
|
||||
| What is it called when you form and offspring similar to the parents? | Reproduction
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|
||||
| What do you call all of the changes as the living thing grows? | Development
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|
||||
| What is the basic unit for all living things? | Cell
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|
||||
| What is the process by which food is broken down and energy is released? | Cellular Respiration
🗑
|
||||
| What is a living thing that makes or produces its own food? | Producer
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|
||||
| What is a living thing that consumes other living things? | Consumer
🗑
|
||||
| What is a trait that makes living things better able to survive? | Adaptation
🗑
|
||||
| Who is the scientist that looked at thin slices of cork under a microscope? | Robert Hooke
🗑
|
||||
| What is the thing that gives the cell its shape? | Cell Membrane
🗑
|
||||
| What controls most of the cells activities? | Nucleus
🗑
|
||||
| What surrounds he nucleus and separates it from the rest of the cell? | Nuclear Membrane
🗑
|
||||
| What is the cell part that helps ribosomes? | Nucleolus
🗑
|
||||
| What is the cell part that determines what traits a living thing will have? | Chromosome
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|
||||
| What is the clear jellylike material between the cell membrane and the nucleus that helps make up most of the cell? | Cytoplasm
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|
||||
| What cell part moves materials within the cell? | Canal Network
🗑
|
||||
| What cell part produces energy? | Mitochondria
🗑
|
||||
| Which cell part makes proteins? | Ribosomes
🗑
|
||||
| What is the cell part that stores food, water, and minerals? | Vacuole
🗑
|
||||
| This cell part helps with ell reproduction. | Centrioles
🗑
|
||||
| A cell wall is found in which cell plant or animal? | Plant
🗑
|
||||
| Chloroplast is found in which cell plant or animal? | Plant
🗑
|
||||
| Moving a substance from where there was a large amount to a smaller amount is called? | Diffusion
🗑
|
||||
| Membranes have opening called? | Spores
🗑
|
||||
| Movement of water across the cell is called? | Osmosis
🗑
|
||||
| What do you call a group of similar cells working together to do a certain job? | Tissue
🗑
|
||||
| A group of organs working together to do a job is? | Organ System
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|
||||
| What is a living thing called? | Organism
🗑
|
||||
| This cell part destroys worn out parts and gets rid of bacteria? | Digestive Sacs
🗑
|
||||
| This cell part packages and stores chemical? | Packaging Structures
🗑
|
||||
| What are two cell parts found in plant cells that are not found in animal cells? | Chloroplast and cell wall
🗑
|
||||
| A molecule that makes up genes and decides the traits of all living thing. | DNA
🗑
|
||||
| What forms the rungs of a DNA molecule? | Nitrogen bases
🗑
|
||||
| What is the chemical that acts as a messenger for DNA? | RNA
🗑
|
||||
| What code translates the DNA language into the protein language? | Genetic code
🗑
|
||||
| Any change in coping the DNA message | Mutation
🗑
|
||||
| Energy that is given off by atoms is what? | Radiation
🗑
|
||||
| What are two children called that can form from the splitting of one fertilized egg? | identical twins
🗑
|
||||
| Twins that form from two different fertilized eggs are called what? | Fraternal
🗑
|
||||
| What do scientists compare DNA to? | a twisted ladder
🗑
|
||||
| Base A joins with base what? | base T
🗑
|
||||
| Base C joins with base what? | base G
🗑
|
||||
| A chemical within each of your body cells that controls life is called what? | genes
🗑
|
||||
| What does DNA stand for? | deoxyribonucleic acid
🗑
|
||||
| All living things contain what in their cells? | DNA
🗑
|
||||
| Scientists have estimated that a single DNA molecule in a human cell contain about how many rungs? | 100 million
🗑
|
||||
| What controls traits? | DNA
🗑
|
||||
| A chemical that acts as a messenger for DNA is called what? | RNA
🗑
|
||||
| What does RNA stand for? | ribonucleic acid
🗑
|
||||
| The DNA message will change if what takes place? | mutation
🗑
|
||||
| Mistakes in what can cause mutations? | copying
🗑
|
||||
| What type of twins are clones? | identical twins
🗑
|
||||
| Clones have the same what? | DNA and traits
🗑
|
||||
| Fraternal twins have different what? | DNA
🗑
|
||||
| Selective breeding has produced new and better types of plants and what? | animals
🗑
|
||||
| A serious blood disease that starts from a mutation. | hemophilia
🗑
|
||||
| The bringing together of two living things to produce offspring is what? | breeding
🗑
|
||||
| What is the main reason why people breed animals? | to make better offspring
🗑
|
||||
| How many steps are used when DNA copies itself? | 4
🗑
|
||||
| What is sunscreen helpful for? | it helps protect the skin from the suns radiation
🗑
|
||||
| What does gene splicing produce that makes certain chemicals? | bacteria
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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