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Biology: DNA Replication Review

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases:

a)

AGCTTG

b)

GATCCA

c)

TCGAAC

d)

GAUCCA

2.

In both prokaryotes and eukaryotes, DNA replication happens

a)

before cell division.

b)

in the nucleus

c)

only to telomeres

d)

around the histones

3.

What enzyme works to add DNA to ends of chromosomes in rapidly dividing cells such as those found in an embryo, to prevent genes from being lost during replication?

a)

DNA polymerase

b)

histones

c)

telomerase

d)

chromatin

4.

What nucleotide is going to be opposite from thymine?

a)

adenine

b)

cytosine

c)

guanine

d)

uracil

5.

During replication, what enzyme is responsible for building the complementary strand?

a)

histones

b)

nucleosomes

c)

DNA polymerase

d)

chromatin

6.

In eukaryotes, DNA

a)

is located in the nucleus

b)

floats freely in the cytoplasm

c)

is located in the ribosomes

d)

is circular

7.

DNA replication results in two DNA molecules,

a)

each with two new strands.

b)

one with two new strands and the other with two original strands.

c)

each with one new strand and one original strand.

d)

each with two original strands.

8.

In both prokaryotes and eukaryotes, how many copies of the DNA are left after replication?

a)

1

b)

2

c)

3

d)

4

9.

What type of sugar is in DNA?

a)

glucose

b)

lactose

c)

deoxyribose

d)

ribose

10.

Which of the following forms a base pair with guanine?

a)

uracile

b)

cytosine

c)

thymine

d)

adenine

11.

Which of the following is a nucleotide found in DNA?

a)

ribose + phosphate group + thymine

b)

ribose + phosphate group + uracil

c)

deoxyribose + phosphate group + uracil

d)

deoxyribose + phosphate group + cytosine

12.

When reading DNA, we always start the the ____ end and end at the ____ end.

a)

5’ prime, 3’ prime

b)

3’ prime, 5’ prime

c)

longest end, shortest end

d)

top, bottom

13.

What type of bonds hold the two nitrogen base pairs together in the middle of DNA?

a)

ionic

b)

polar

c)

hydrogen

d)

covalent

14.

Which enzyme proofreads the new strands to make sure they are a copy of the original?

a)

DNA polymerase

b)

DNA amylase

c)

DNA primase

d)

DNA ligase

15.

To begin DNA replication, we first need to unzip the double helix ladder of DNA. What enzyme is responsible for unzipping the DNA strands?

a)

histones

b)

DNA helicase

c)

DNA polymerase

d)

chromatin