Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Biology Star
| Question | Choices | Answer |
|---|---|---|
| A computer model of cellular mitosis can simulate the aspects of cellular division quite well. However, microscopic observation of actual cellular mitosis can improve understanding because actual observations | A - may reveal greater unknown complexities B - are easier than a computer model to view. C - are the same each time. D - may provide division events in sequence. | A - may reveal greater unknown complexities. |
| Which of the following BEST describes the use of population models in biology? | A - They are generally easy to construct. B - They can represent reality precisely. C - They are used when no observations have been made. D - They can help predict outcomes. | D - They can help predict outcomes. |
| AFTER a volcanic eruption has COVERED an area with lava, which of the following is the MOST likely order of succession in the repopulation of the area? | A - lichens -> grasses -> shrubs -> trees B - mosses -> grasses -> lichens -> trees C - grasses -> trees -> mosses -> lichens D - shrubs -> grasses -> trees -> lichens | A - lichens -> grasses -> shrubs -> trees |
| Which information was MOST important to the development of genetic engineering techniques? | A - The observation of nondominant alleles B - The discovery of lethal genes. C - The formulation of Punett squares. D - The structure of a DNA molecule. | D The structure of a DNA molecule. |
| The cell membrane of the red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Because other substances are blocked from entering the membrane is called | A - perforated B - Semi-permeable C - non-conductive D - permeable | B - semi-permeable |
| What causes tomatoes to ripen much more slowly in a refrigerator than they do if left on a table at room temperature? | A - Tomatoes need sunlight to ripen. B - Humidity accelerates the ripening process C - Low temperatures reduce the action of ripening enzymes D - Enzymes produced by bacteria inhibit ripening enzymes. | C - Low temperatures reduce the action of ripening enzymes. |
| There are many different enzymes located in the cytoplasm of a single cell. How is a specific enzyme able to catalyze a specific reaction? | A - Different enzymes are synthesized in specific areas B - Most enzymes can catalyze many different reactions. C - An enzyme binds to a specific substrate for the reaction catalyzed D - Enzymes are transported to a specific substrates by ribosomes | C - An enzyme binds to a specific substrate for the reaction catalyzed |
| Some snake venoms are harmful because they contain enzymes that destroy blood cells for tissues. The damage caused by such a snakebite could BEST be slowed by | A - applying ice to the bite area B - drinking large amounts of water C - Inducing vomiting D - Increasing blood flow to the area | A - applying ice to the bite area |
| Maltose can be broken down into glucose molecules by the enzyme maltase. Which of the following would slow the reaction rate? | A - adding maltase B - adding maltose C - removing glucose D - diluting with water | D - diluting with water |
| Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells | A - Are much smaller B - have permeable membranes C - Have a high rate of reproduction D - have nuclei | D - have nuclei |
| Which cellular organelle is responsible for packaging the proteins that the cell secretes? | A - cytoskeleton B - cell membrane C - lysosome D - golgi apparatus | D - golgi apparatus |
| Which molecule in plant cells first captures the radiant energy from sunlight? | A - glucose B - carbon dioxide C - chlorophyll D - Adenosine triphosphate | C - Chlorophyll |
| The first stage of photosynthesis in a chloroplast is | A - light-dependent B - temperature-dependent C - glucose-driven D - ATP-driven | A - Light-dependent |
| A cell from heart muscle would PROBABLY have an unusually highly proportion of | A - lysosomes B - Mitochondria C - mRNA D - Golgi bodies | B - Mitochondria |
| In aerobic respiration, the Krebs cycle (citric acid cycle) takes place in | A - chloroplasts B - nuclei C - lysosomes D - mitochondria | D - Mitochondria |
| Which of the following statements correctly describes meiosis? | A - Cells divide only once during meiosis. C - The cells produced at the end of meiosis are genetically identical to the parent cell D - The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. | D - The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. |
| Which of the following BEST describes meiosis? | A - It is carried out in all tissues that require cell replacement. B - It occurs only in cells in the reproductive structures of the organism C - It happens in all tissues except the brain and spinal cord D - It is the first stage of mitosis | B - it occurs only in the reproductive structures of the organism |
| if a corn plant has a genotype of Ttyy, what are the possible genetic combinations that could be present in a single grain of pollen from this plant? | A - Ty, ty B - TY, ty C - TY, Ty, ty D - Ty, ty, tY, TY | A - TY, ty |
| Which of the following sequences represents chromosome number during fertilization? | A - n+n -> 2n B - 2n -> n+n C - n -> n D 2n -> 2n | A - n+n ->2n |
| Based only on the sex chromosomes in typical human egg and sperm cells at fertilization, the probability of producing a female is | A - 25% B - 50% C - 75% D - 90% | B - 50% |
| In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of two red-eyed heterozygous flies (Rr)? | A - RR only B - rr only C - Rr and rr only D - RR, Rr, and rr only | D - RR, Rr, and rr only |
| Deafness is due to a recessive allele (d) of a particular gene, and normal hearing is due to its dominant allele (D). What percentage of the offspring of a normal heterozygous (Dd) dog and a deaf dog (dd) would be expected to have normal hearing? | A - 0% B - 25% C - 50% D - 100% | C - 50% |
| If a human baby boy inherits a recessive allele from his MOTHER, in which circumstance would he MOST likely show the trait coded for by the recessive allele? | A - The baby inherits the dominant allele from his father. B - The allele is on an autosomal chromosome and the baby is a twin. C - The allele is on the x Chromosome D - The allele is on the Y chromosome. | C - The allele is on the X Chromosome |
| Mendel hypothesized that reproductive cells have only one factor for each inherited trait. This hypothesis is supported by the observation that | A - Haploid cells are produced by mitosis B - Diploid cells are produced by mitosis C - Haploid cells are produced by meiosis D - Diploid cells are produced by meiosis | C - haploid cells are produced by meiosis |
| Which of the these would MOST likely cause a mutation? | A - The placement of ribosomes on the endoplasmic recticulum B - The insertion of a nucleotide into DNA C - The movement of transfer (tRNA) out of the nucleus D - The release of messenger RNA from DNA | B - the insertion of a nucleotide into DNA |
| One human disease is caused by a change in one codon in a gene from GAA to GUA. This disease is the result of | A - a mutation B - a meiosis error C - crossing-over D - polyploidy | A - a mutation |
| Although there are a limited number of amino acids, many different types of proteins exist because the | A - size of a given amino acid can vary B - chemical composition of a given amino acid can bery C - sequence and number of amino acids is different D - same amino acid can have man different properties | C - sequence and number of amino acids is different |
| The clear protein of an egg white becomes opaque and firm when cooked because the heat | A - mutates the DNA B - turns the protein into carbohydrates C - stops protein formation D - changes the protein structure | D - changes the protein structure |
| Semi-conservative replication of DNA refers to the idea that | A-DNA molecules need to unwind before duplication beings B-each new DNA molecule contains 2 new single strands C-The 2 strands of DNa molecules run in opposite directions. D-each half of the original DNA molecule isjoined w/ a new complementary DNA str | D - each half of the original DNA molecule is joined with a new complementary DNA strand |
| The bacterium 'Agro bacterium tumefaciens' infects plants, and a portion of its DNA is inserted into the plant's chromosomes. This causes the plant to produce gall cells, which manufacture amino acids that the bacterium uses as food. This is example of | A - Polyploidy B - genetic manipulation C - grafting D - hybridization | B - genetic manipulation |
| In carrier pigeons there is a rare inherited condition that causes the death of the chicks before hatching. In order for this disease to be passed from generation to generation there must be parent birds that | A - are heterozygous for the disease. B - have the disease themselves C - Produce the new mutations for this disease. D - are closely interbred | A - Are heterozygous for the disease |
| A healthy individual is a cerrir of a lethal allele but is unaffected by it. What is the probable genotype of this individual? | A - two dominant normal alleles B - One recessive lethal allele and one dominant lethal allele C - one recessive lethal allele and one dominant normal allele D - one dominant lethal allele and one recessive normal allele | C - one recessive lethal allele and one dominant normal allele |
| Genetic engineering has produced goats whose milk contains proteins that can be used as medicines. This effect was produced by | A - mixing foreign genes into the milk B - injecting foreign genes into the goats' udders. C - inserting foreign genes into fertilized goat eggs D - genetically modifying the nutritional needs of the goats' offspring | C - inserting foreign genes into fertilized goat eggs. |
| Scientists found that, over a period of 200 years, a mountain pond was transformed into a meadow. During that time, several communities of organisms were replaced by different communities. explains why new communities able to replace the older ones. | A - The original species became extinct. B - Species in the older community died from old age C - The abiotic characteristics of the habitat changed D - Diseases that killed the older organisms disappeared. | C - The abiotic characteristics of the habitat changed. |
| Grasses -> Crickets -> Field Mice -> Hawks. for the food chain shown, which of the following changes would have the MOST severe consequences? | A - a drastic decrease in rainfall, causing drought B - the poaching of predatory hawks by game hunters C - The introduction of a second predator that eats field mice D - a parasitic infestation that reduces the cricket population | A - a drastic decrease in rainfall, causing drought. |
| Complete burning of plant material returns carbon primarily to the | A - herbivores B - water C - vegetation D - atmosphere | D - atmosphere |
| Which of these organisms are MOST helpful in preventing Earth from being covered with the bodies of dead organisms? | A - herbivores B - producers C - Parasites and viruses D - fungi and bacteria | D - Fungi and bacteria |
| Which of these organisms would MOST likely be found at the top of an energy pyramid? | A - Clams B - Sardines C - Sharks D - Kelp | C - Sharks |
| Which of these organisms would MOST likely be found at the bottom of a biomass pyramid? | A - giant squids B - sand sharks C - sea cucumbers D - green algae | D - green algae |
| Mutations within a DNA sequence are | A - natural processes that produce genetic diversity B - natural processes that always affect the phenotype C - unnatural processes that always affect the phenotype D - unnatural processes that are harmful to genetic diversity | A - natural processes that produce genetic diversity |
Created by:
df