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NBC 3 DNA Enzymes Replication

Total questions: 9

Worksheet time: 7mins

Name
Class
Date
1.

The picture below shows an enzyme unwinding and unzipping DNA.

​What is the name of this enzyme?

a)

DNA Helicase

b)

DNA Ligase

c)

DNA polyermase

d)

RNA Polymerase

2.

Which of the following DNA nucleotides are paired with the correct corresponding DNA nucleotide? (mark all that apply)

a)

Adenine with Thymine

b)

Guanine with Cytosine

c)

Thymine with Cytosine

d)

Adenine with Uracil.

e)

Uracil with Thymine

3.

You are given the DNA strand 5'ATGCTCAGCTGA3'. What is the corresponding DNA strand?

a)

5'UACGAGUCGACU3'

b)

5'TACGAGTCGACT3'

c)

3'UACGAGUCGACU5'

d)

3'TACGAGTCGACT5'

4.

DNA is a

a)

protein

b)

nucleic acid

c)

lipid

d)

carbohydrate

5.

Part A of the diagram is a

a)

Phosphate

b)

Nucleic acid

c)

Nitrogenous base

d)

Deoxyribose sugar

6.

Part B of the diagram is a

a)

Phosphate

b)

Nucleic acid

c)

Nitrogenous base

d)

Deoxyribose sugar

7.

Part C of the diagram is a

a)

Phosphate

b)

Nucleic acid

c)

Nitrogenous base

d)

Deoxyribose sugar

8.

Which is the role of DNA polymerase?

a)

Unwinds the original DNA strand

b)

Lays down RNA primer for new nucleotide bases.

c)

Builds new strands by bringing in new nucleotide bases.

d)

Remove Okazaki fragments for new nucleotides.

9.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein