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Biology Quiz on Nucleic Acids

Total questions: 14

Worksheet time: 7mins

Name
Class
Date
1.

Because of base pairing in DNA, the amount of

a)

Adenine = guanine

b)

Adenine = thymine

c)

Thymine = cytosine

d)

Guanine = thymine

2.

Contains the base Uracil

a)

RNA

b)

DNA

c)

BNA

3.

Which is made of nucleotides

a)

DNA

b)

RNA

c)

Both

4.

Which of the following forms a base pair with thymine?

a)

Adenine

b)

Guanine

c)

Thymine

d)

Cytosine

5.

What type of bond holds the double stranded DNA molecule together?

a)

Ionic bonds

b)

Nitrogen bonds

c)

Hydrogen bonds

d)

Polar bonds

6.

A DNA strand that has the bases CTAGGT. What would its complementary strand look like?

a)

CTAGGT

b)

TGGATC

c)

GTUCCA

d)

GATCCA

7.

In eukaryotes, DNA

a)

Is located in the nucleus

b)

Floats freely in the cytoplasm

c)

Is located in the ribosomes

d)

Is circular

8.

The “backbone” of DNA is made of

a)

Sugar and nitrogenous bases

b)

Sugar and phosphate

c)

Phosphate and nitrogenous bases

d)

Phosphate and lipids

9.

If the enzyme helicase did not function properly, then

a)

Hydrogen bonds between the new DNA strands could not form

b)

New nucleotides could not be added to the new strand

c)

The Okazaki fragments could not be linked together

d)

The hydrogen bonds holding the two strands together could not be broken

10.

When one DNA molecule is copied to make two new DNA molecules, the resulting DNA molecules contain

a)

None of the parent DNA

b)

50% of the parent DNA

c)

75% of the parent DNA

d)

100% of the parent DNA

11.

Based on your answer from the question above. We call DNA replication

a)

Conservative

b)

Semiconservative

c)

Semicomplementary

d)

Complementary

12.

One strand of DNA runs 5’-3’ while the other runs 3’-5’. Because of this, we say DNA strands are

a)

Complementary

b)

Antiparallel

c)

Semiconservative

d)

Leading and lagging strands

13.

Put the steps of DNA replication in order: 1. Hydrogen bonds between nucleotides reform. 2. Helicase breaks the hydrogen bonds between nucleotides. 3. Ligase binds together Okazaki fragments. 4. DNA polymerase adds nucleotides to the new DNA strand.

a)

1, 2, 3, 4

b)

2, 3, 1, 4

c)

2, 4, 3, 1

d)

4, 3, 1, 2

14.

Which contains the sugar deoxyribose?

a)

RNA

b)

DNA

c)

Both