Question

QUESTION 1

* Compared to the leading strand, the lagging strand requires ________ primers.??

A. more

B. the same number of

C. less

QUESTION 2

* Which enzyme synthesizes the majority of the DNA polymer for both the leading and lagging strands???

A. DNA polymerase I

B. primase

C. DNA polymerase III

D. helicase

QUESTION 3

* For each origin of replication, how many DNA polymerase III enzymes are needed???

A. 1

B. 8

C. 4

D. 2

QUESTION 4

* Which enzyme removes the primers and replaces them with DNA nucleotides???

A. DNA polymerase III

B. primase

C. DNA polymerase I

D. topoisomerase

QUESTION 5

* The lagging strand DNA polymerase synthesizes DNA moving in the direction away from the replication fork.???True??False??

QUESTION 6

* Which enzyme is required for DNA replication but is not active in the replication fork region???

A. topoisomerase

B. primase

C. DNA polymerase III

D. helicase

QUESTION 7

* Eukaryotic chromosomes contain one origin of replication each.???True??False??

QUESTION 8

* Which direction (along the new strand) are nucleotides added by DNA polymerase III???

A. 5' to 3' for the leading strand and 3' to 5' for the lagging strand

B. 5' to 3' for both leading and lagging strands

C. 3' to 5' for the leading strand and 5' to 3' for the lagging strand

D. 3' to 5' for both leading and lagging strands

QUESTION 9

* Compared to the leading strand, the lagging strand requires ________ single strand binding proteins.?

A. more

B. the same number of

C. less

QUESTION 10

* What is the function of the helicase enzyme???

A. to copy the DNA

B. to separate the DNA double helix

C. to make primers

D. to remove primers

  

QUESTION 11

* What is the function of the DNA ligase enzyme?

A. to join the leading strands together

B. to join sugar phosphate backbones of Okazaki fragments together

C. to re-zip the double helix together

D. to remove RNA primers

Answer 1

The answers to the questions are as follows:

1) A.   more

2) C.   DNA polymerase III

3) A.   1

4) C.   DNA polymerase I

5) True

6) A. Topoisomerase

7) False

8) B.   5' to 3' for both leading and lagging strands

9)B.   the same number of

10) B.   to separate the DNA double helix

11) B.   to join sugar phosphate backbones of Okazaki fragments together

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