Question

11) Match the following enzymes involved in DNA replication with their functions.


unwinds the DNA structure and makes it lay flat
adds new nucleotides to each strand and a subunit proofreads the new nucleotides
seals the fragments into one long strand
makes a dent in the double helix and then begins to unzip it

12) Choose the best answer.

This refers to the structure of DNA.

double helix

gamete

codon

triple helix

13) Choose the best answer.

DNA replication occurs during what stage of Interphase?

G2

M

S

G1

Answer 1

11) Match enzymes to functions:
- Unwinds the DNA structure and makes it lay flat — Topoisomerase (gyrase)
- Adds new nucleotides to each strand and a subunit proofreads the new nucleotides — DNA polymerase
- Seals the fragments into one long strand — DNA ligase
- Makes a dent in the double helix and then begins to unzip it — Helicase

12) double helix

13) S (the S phase)