E. B and C. E. None of the above. E. None of the above. E. None of the above. 1.
ID: 60391 • Letter: E
Question
E. B and C.
E. None of the above.
E. None of the above.
E. None of the above.
1. Because genomes tend to be quite large, it is essential that the DNA replication process be: A. extremely rapid, over 10,000 base pairs per minute. B. extremely rapid, over 1000 base pairs per minute. C. extremely accurate, with an error rate of less than one in ten million. D. A and C.E. B and C.
2. Models of DNA replication include: A. conservative, in which the original DNA strands are together at the conclusion of the process. B. semi-conservative, in which the original DNA strands are together at the conclusion of the process. C. dispersive, in which each double helix contains one old strand and one new strand of DNA. D. disruptive, in which each double helix contains one old strand and one new strand of DNA.E. None of the above.
3. Okazaki fragments are produced because: A. DNA polymerase functions only in the 3' to 5' direction. B. DNA strands are parallel to each other. C. leading and lagging strands are synthesized at different times. D. lagging strands are copied discontinuously.E. None of the above.
4. Which of the following proteins relies on complementary base pairing during the DNA replication process? A. helicase B. single-stranded binding proteins (SSBPs) C. primase D. DNA ligaseE. None of the above.
Which of the following proteins identifies specific sequences during the DNA replication process? A. helicase B. single-stranded binding proteins (SSBPs) C. primase D. DNA ligase E. initiator proteinExplanation / Answer
1. Answer is option D ( A and C)
As the size of genome is large, DNA replication process should be very rapid, over 10,000 base pairs per minute. and there should be least error with an error rate of less than one in ten million so as to get same DNA as in the parent organism.
2. Answer is option B
DNA replication is seminconservative because original DNA strands and the new formed DNA are present together at the conclusion of the process.
3. Answer is option D
Okazaki fragments are produced because lagging strands are copied discontinuously
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