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Mr. W Regents Review
Review cards for the Living Environment Regents
Question | Answer |
---|---|
What is the difference between active and passive transport? | active requires energy, passive doesn't. Passive is high to low concentrations, active is low to high concentrations. |
Why are decomposers important to the ecosystem? | they recycle nutrients back into the biosphere. |
What "cuts" the DNA into fragments when you do gel electrophoresis? | restriction enzymes. |
What does Diploid mean? | a cell that contains both sets of homologous chromosomes. |
What is dehydration synthesis? | The chemical process by which a molecule of water is removed from the reactants to join the reactant together. |
All proteins contain, "what element?" | Nitrogen |
What is the basic building block of protein? | amino acids |
Describe the steps in CLONING. | 1.)the nucleus of an egg cell is removed and replaced with a nucleus taken from another adult. 2.) This egg is placed in the reproductive system of a foster mother. 3.) The foster mother then gives birth to the clone. |
What does the Benedicts Solution Test for? | Glucose |
What is Hydrolysis? | breaking apart molecules by water. |
What does DNA code for? | proteins. |
What is produced during meiosis? | sex cells. (gametes) |
what is the cell structure that controls molecules movement into and out of the cell? | cell membrane. |
What animal has the greatest impact on the environment? | Humans. |
What makes an experiment valid? (3 things) | 1.) Has a control 2.) Tests only 1 variable at a time. 3.) Has a large sample size / many test subjects. |
What is Geographic or reproductive Isolation? | 1.) when members of a population are no longer able to reproduce with eachother. 2.) Sometimes, due to being physically seperated from the original population. |
What is a "niche?" | an organism's role in the environment. |
In an Energy pyramid, where are the plants, or producers located? | The bottom level. |
What is a heterotroph? | an organism that cannot make its own food. |
What is a hypothesis? | a possible explanation for a set of observations or possible answer to a scientific question. |
What happens if your body temperature gets too high? | your enzymes denature. |
What is "Inorganic?" | a chemical compound that does not contain carbon. |
What does "biotic" mean? | living. |
What is ATP? | 1.) Adenosine triphosphate. 2.) Cellular energy. |
What is "carrying capacity?" | largest number of individuals of a population that a given environment can support. |
The beaks of Darwin's finches are examples of... what? | adaptive radiation. |
What is a Gamete? | 1.) A sex cell. 2.) A haploid cell. 3.) Egg and sperm. |
What is biodiversity? And, why is it important? | 1.) (Biological diversity,) the sum total of the variety of organisms in the biosphere. 2.) Mant species provide us with foods, industrial products, and medicines. |
Why does an insecticide not work as well when you spray it on bugs a second time? | Because of the natural variation that exists in the population, same insects were resistant to the toxins and their offspring which were also resistant make up a greater percentage of the population during the 2nd spraying. |
What is this... (DNA or RNA?) C U G A A U C G A | RNA |
What is "Organic?" | a chemical compound that contains carbon atoms and hydrogen atoms. |
What is Bromthymol Blue used for? | as a pH indicator. |
What is the basic building block for LIPIDS? | fatty acids and glycerol. |
What is this... (DNA or RNA?) C T G T A A C G A | DNA |
What is normal human body temperature in degrees Farienheit and degrees Celcius? | 1.) 98.6 degrees F. 2.) 37 degrees C. |
What does "Abiotic" mean? | nonliving. |
How many chromosomes do you have in your body cells? | 46 |
What can a producer do that a carnivore can't? | make it's own food. |
What does Haploid mean? | a cell that contains only a single set of chromosomes. |
What is Iodine a test for? | starch. |
When you combine glucose and oxygen what do you get? | H2O, CO2, ATP. |
What is a Vacinne? | a weakened or mild form of a pathogen to produce immunity. |
Is cloning sexual or asexual? | asexual. |
What is an autotroph? | An organism that can make its own food. |
What is the basic building block of CARBOHYDRATES? | carbon, hydrogen, oxygen. |
How many chromosomes do you have in your sex cells? | 23 |
What can disrupt a stable ecosystem? | any upset in homeostasis. ex.) disease, invasive species, change in weather, natural disaster |
How is selective breeding different from natural selection? | 1.) selective breeding is when humans breed organisms based on desired traits. 2.) natural selection is when nature selects organisms that are better adapted to their environment. |
What does "DNA" stand for? | Deoxyribonucleic acid. |
Name 3 things that can cause mutations. | 1.) radiation 2.) chemicals 3.) errors during replication |
What is it called when all your metabolic processes are in balance? | homeostasis. |
Why are muscle cells different from blood cells? (if they all have the same DNA) | different genes are expressed (turned on) in different cells. |
Name 5 proteins in your body. | enzymes, receptor molecules, antibodies, hormones, hemoglobin |
What is an antibody? | specialized protein that helps destroy disease causing organisms. |
Grasses + Shrubs -> Shrubs + Evergreen Trees-> Deciduous + Hardwood forests. What is that describing? | Sucession. |
What is a food web? | a series of interconnected food chains. |
Where does fertilization of an egg occur in a female mammal? | the fallopian tubes. |
What are all the cell parts called? | organelles. |
What is an antibody? | specialized protein that helps destroy disease causing organisms. |
Grasses + Shrubs -> Shrubs + Evergreen Trees-> Deciduous + Hardwood forests. What is that describing? | Sucession. |
What is a food web? | a series of interconnected food chains. |
Where does fertilization of an egg occur in a female mammal? | the fallopian tubes. |
What are all the cell parts called? | organelles. |
What do we call cells (like monerans) that lack a membrane bound nucleus? | prokaryotes. |
What compound do humans (animals) store glucose as? | glycogen |
What do guard cells do for a plant? | open and close a stomata. |
What is in the cell membrane that allows cells to communicate? Or respond to different chemicals? | receptors |
What is the reaction equation for photosynthesis? | CO2 + H2O -> light C6H12O6 + O2 |
Tell 5 things you know about Enzymes. | 1.) they are made of proteins. 2.) they are catylsts- speed up chemical reactions. 3.) they are subsrate specific, they fit like a lock and key. 4.) they denature at extreme temperatures. 5.) they denature at extreme pH's. |
What are 3 ways to get variation? | mutations, crossing over, recombination during fertilization. |
Why do your sex cells only have half the number of chromosomes? | Because they are produced by meiosis. |
What is Biodiversity? | Biological diversity the sum total of the variety of organisms in the biosphere. |
What is Transpiration? Where does it occur? | 1.) evaporation of water through stomata. 2.) plants. |
Name 2 places in your body where you have A LOT of mitochondria. | 1.) any muscle 2.) kidneys |
What is the hormone, Insulin for? | to take sugar out of the blood and store it in cells. |
What does Eukaryotic mean? | 1.) contains a nucleus. 2.) contains membrane bound organelles. |
Where in your body does active transport happen a lot? | kidneys. |
What is an antigen? | any substance that triggers an immune system repsonse. |
What compound do plants store glucose as? | cellulose |
Why are different cells able to respond to different chemicals (hormones)? | they have different receptor molecules. |
For a mutation to be passed on, it must be in a __________ cell. | sex cell |
What is Global Warming? | the increase in the average temperature of the biosphere. |
What is produced during mitosis? | body cells. (somatic cells) |