4.2 Study Guide

Question 1

Step 1= DNA strands are separated

Answer 1

Helicase

Question 2

Step 2= RNA primer is laid down

Answer 2

Primase

Question 3

Step 3= DNA nucleotide bases are added

Answer 3

DNA Polymerase 3

Question 4

Step 4= RNA primer is replaced by DNA

Answer 4

DNA Polymerase 1

Question 5

Step 5= Okazaki fragments are glued together

Answer 5

Ligase

Question 6

DNA strands are

Answer 6

anti parallel

Question 7

What is the difference between the functions of DNA Polymerase 3 and DNA Polymerase 1?

Answer 7

DNA Polymerase 3 is the main builder while DNA Polymerase 1 is the editor

Question 8

what does helicase do

Answer 8

unzips the hydrogen bonds

Question 9

what bonds are broken by helicase

Answer 9

hydrogen bonds

Question 10

Why is the helicase able to break these bonds?

Answer 10

they are weaker than covalent bonds.

Question 11

The direction that the new DNA strands grows

Answer 11

5’ to 3’

Question 12

The enzyme that catalyzes the synthesis of new DNA by adding nucleotides to a preexisting chain

Answer 12

DNA Polymerase