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Honors Biology - DNA Replication

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

Which of the following replication enzymes is used to unwind the DNA double helix?

a)

DNA polymerase

b)

Primase

c)

DNA ligase

d)

Helicase

2.

Of the following DNA replication enzymes, which one links the Okazaki fragments of the lagging strand?

a)

DNA ligase

b)

DNA polymerase

c)

Helicase

d)

Primase

3.

DNA replication is semi-conservative. This means that __________.

a)

both double strands have different percentages of nucleotides

b)

both double strands have a newly created strand and an original template strand

c)

an entirely new synthesized DNA molecule is created, while the original double helix stays together

d)

none of the above

4.

Which of the following complementary base pairs are correct?

a)

A - T

b)

T - C

c)

A - G

d)

G - U

5.

Which enzyme catalyzes the elongation of a new DNA strand in the 5' → 3' direction?

a)

Ligase

b)

DNA polymerase

c)

Primase

d)

Lactase

6.

DNA is a polymer made of monomers (building blocks) called

a)

Nucleotides

b)

Proteins

c)

Amino Acids

d)

Lipids

7.

A nitrogenous base is an important component of the nucleotide making up DNA. Which of the following correctly lists the four possible nitrogenous bases in DNA?

a)

glutamine, proline, tyrosine, phenylalanine

b)

adenine, guanine, cytosine, thymine

c)

leucine, proline, tyrosine, phenylalanine

d)

adenine, guanine, cytosine, uracil

8.

What is an Okazaki fragment?

a)

short RNA primers placed before DNA replication starts

b)

long segments of DNA on leading strand

c)

short sequences of DNA which are synthesized discontinuously on lagging strand

d)

a japanese show on netflix

9.

Site or section where double-stranded DNA splits apart into 2 single strands

a)

Leading Strand

b)

Replication Fork

c)

Lagging Strand

d)

RNA primer

10.

(Hard) Which of the following is true?

a)

Strand III is a lagging strand template while strand IV is a leading strand template

b)

Strand I is the leading strand while Strand II is the lagging strand

c)

Strand I and Strand II are template (parental) strands

d)

Strand III is complimentary to Strand II

11.

Which strand is replicated continuously?

a)

Leading strand

b)

Lagging strand

c)

Template strand

12.

DNA polymerase can only add nucleotides in the ___________ direction.

a)

5' to 3'

b)

5' to 5'

c)

3' to 5'

d)

3' to 7'