【評論主題】35. Genomic imprinting, DNA methylation, and histone acetylation are all examples of(A) genetic muta
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【評論主題】34. The role of a metabolite that controls a repressible operon is to(A) bind to the promoter region
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【評論主題】33. What are polyribosomes?(A) groups of ribosomes reading a single mRNA simultaneously(B) ribosomes
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【評論主題】32. Sickle-cell disease is probably the result of which kind of mutation?(A) point(B) frameshift(C)
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【評論主題】31. Which of the following is not true of RNA processing?(A) Exons are cut out before mRNA leaves th
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【評論主題】30. Which component is not directly involved in translation?(A) mRNA(B) DNA(C) tRNA(D) ribosomes
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【評論主題】29. Which enzyme catalyzes the elongation of a DNA strand in the 5' → 3' direction?(A) pri
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【評論主題】28. In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made us
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【評論主題】27. A cell that has 2n + 1 chromosomes is(A) trisomic(B) monosomic(C) euploid(D) polyploid
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【評論主題】26. If a human interphase nucleus contains three Barr bodies, it can be assumed that the person(A) h
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【評論主題】25. Calico cats are female because(A) a male inherits only one of the two X-linked genes controlling
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【評論主題】24. Skin color in a certain species of fish is inherited via a single gene with four different allel
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【評論主題】23. Mendel was able to draw his ideas of segregation and independent assortment because of the influ
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【評論主題】22. In a cross AaBbCc × AaBbCc, what is the probability of producing the genotype AABBCC?(A) 1/8(B)
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【評論主題】21. In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygo
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【評論主題】20. Which of the following happens at the conclusion of meiosis I?(A) Homologous chromosomes are sep
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【評論主題】19. Homologous chromosomes synapse and crossing over occurs(A) The statement is true for mitosis onl
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【評論主題】18. Which of the following occurs in meiosis but not in mitosis?(A) Chromosome replication(B) Synaps
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【評論主題】17. If there are 20 chromatids in a cell at metaphase, how many chromosomes are there in each daught
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【評論主題】16. Starting with a fertilized egg (zygote), a series of five cell divisions would produce an early
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【評論主題】15. What is a chromatid?(A) a chromosome in G1 of the cell cycle(B) a replicate chromosome(C) a chro
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【評論主題】14. Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently
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【評論主題】13. If a pharmaceutical company wished to design a drug to maintain low blood sugar levels, one appr
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【評論主題】12. Synaptic signaling between adjacent neurons is like hormone signaling in which of the following
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【評論主題】11. Muscle cells, when an individual is exercising heavily and when the muscle becomes oxygen depriv
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【評論主題】10. How does pyruvate enter the mitochondrion?(A) active transport(B) diffusion(C) facilitated diffu
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【評論主題】9. What are the end products of glycolysis?(A) CO2 and H2O(B) CO2 and pyruvate(C) NADH and pyruvate(
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【評論主題】8. Which of the following is most similar in structure to ATP?(A) an anabolic steroid(B) a DNA helix
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【評論主題】7. An animal cell lacking oligosaccharides on the external surface of its plasma membrane would like
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【評論主題】6. Which of the following is true of integral membrane proteins?(A) They lack tertiary structure(B)
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【評論主題】5. Which structure is the site of the synthesis of proteins that may be exported from the cell?(A) r
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【評論主題】4. Which of the following polymers contain nitrogen?(A) starch(B) glycogen(C) cellulose(D) chitin
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【評論主題】3. Which of the following ionizes completely in solution and is considered to be a strong acid?(A) N
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