AP Biology Exam Chapters 1-12 Questions and Answers Already Passed

AP Biology Exam Chapters 1-12 Questions and Answers Already Passed _____ is to a mitochondrion as _____ is to a chloroplast O2 ... CO2 _____ is to science as _____ is to engineering. Discovery ... invention "Sticky ends" are very useful in genetic engineering because they _____. provide a site for complementary base pairing so that pieces of DNA can be linked together (Diagram with the beetles. 1st picture shows multiple beetles both black and white. 2nd diagram shows a bird eating the white beetles. 3rd diagram shows the black beetles that survived). In the figure, what leads directly to the reproductive success of these beetles? The beetles with traits best suited to the environment survive. (The photo contains unicellular, multicellular, and photosynthetic protists.) Protista A base-substitution mutation in a germ cell line is likely to have no effect on phenotype if the substitution _____. occurs in an intron A cancer cell _______. does not respond to the signals that control cell division A cell biologist carefully measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G2 phase of the cell cycle contained 200 units of DNA. What would be the amount of DNA in one of the grasshopper daughter cells? 100 units A cell biologist found that two different proteins with largely different structures were translated from two different mRNAs. These mRNAs, however, were transcribed from the same gene in the cell nucleus. Which mechanism below could best account for this? Exons from the same gene could be spliced in different ways to make different mRNAs. A cell engulfs a particle by wrapping pseudopodia around it and packaging it within a vacuole. Which statement best describes phagocytosis? A certain cell has a dense nucleoid region, ribosomes, but no membrane-enclosed organelles. Based on this information, it could be _____ an archaean A chemist has discovered a drug that blocks phosphoglucoisomerase, an enzyme that catalyzes the second reaction in glycolysis. He wants to use the drug to treat people with bacterial infections. However, he can't do this because _____. human cells also perform glycolysis; the drug might also poison them A child with cystic fibrosis can be born to two parents who do not have the disease. This is because the disease _____. is caused by a recessive allele A cleavage furrow forms in an animal cell during _____. cytokinesis A company was testing a new drug they thought would help decrease the risk of transmitting viruses from mother to fetus. In an experiment to test the compound, a worker gave 400 pregnant female rats a small dose of the experimental drug and inoculated each with a type of virus known to cause disease in rats. An additional 400 pregnant rats were given only the virus. Of the rat pups born to the females that received both the virus and the drug, 203 showed no symptoms of the disease; 207 rat pups born to virus-only females showed symptoms. From this test, we can best conclude _____. that the drug seems