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DNA Practice Worksheet

Total questions: 23

Worksheet time: 27mins

Name
Class
Date
1.

Name #1

a)

phosphate group

b)

deoxyribose

c)

nitrogen base

d)

purine

2.

What type of bonds are shown by #2?

a)

hydrogen

b)

covalent

3.

Name #3

a)

nitrogen base

b)

phosphate group

c)

deoxyribose

4.

Name #4

a)

hydrogen bases

b)

phosphate group

c)

deoxyribose

d)

nitrogen bases

5.

Name #5 and the group it belongs to.

a)

guanine

b)

thymine

c)

purines

d)

pyrimidines

6.

Name #6 and the group it belongs to.

a)

guanine

b)

thymine

c)

purines

d)

pyrimidines

7.

What type of bonds are shown by #7?

a)

hydrogen

b)

covalent

8.

Select the nucleotide

a)
b)
c)
d)
9.

Group of nitrogen bases that contain a double ring structure

a)

guanine

b)

thymine

c)

purine

d)

pyrimidine

10.

5-C carbohydrate component of DNA

a)

phosphate group

b)

nucleic acid

c)

nitrogen base

d)

deoxyribose

11.

Enzyme used to “unzip” DNA during replication

a)

helicase

b)

semi-conservative

c)

DNA polymerase

12.

Biomolecule group that DNA, RNA, & ATP belong to

a)

carbohydrate

b)

nucleic acid

c)

lipid

d)

protein

13.

Scientist who determined that the % of A = % of T, % of G = % of C

a)

Watson

b)

Crick

c)

Erwin Chargaff

d)

Rosalind Franklin

14.

Scientist who used x-ray diffraction to obtain a picture of DNA

a)

Watson

b)

Crick

c)

Erwin Chargaff

d)

Rosalind Franklin

15.

Group of nitrogen bases that contain a single ring structure

a)

pyrimidines

b)

purines

16.

Bond that holds the components of each nucleotide together

a)

hydrogen

b)

covalent

17.

Describes the two strands of DNA running 5’-->3’ in opposite directions

a)

helicase

b)

DNA polymerase

c)

antiparallel

d)

semi-conservative

18.

Scientists who built the 3-D model of DNA

a)

Rosalind Franklin

b)

Erwin Chargaff

c)

Robert Hooke

d)

Watson & Crick

19.

Shape of DNA

a)

double-helix

b)

antiparallel

c)

single-helix

d)

parallel

20.

Bond that holds the two strands of DNA together

a)

covalent

b)

hydrogen

21.

Enzyme used to add new DNA nucleotides during replication

a)

helicase

b)

semi-conservative

c)

DNA polymerase

22.

Monomer of DNA or RNA

a)

monosaccharide

b)

amino acid

c)

none

d)

nucleotide

23.

Term to describe the DNA after replication when the strands consist of one original side and one newly formed side.

a)

semi-conservative

b)

helicase

c)

DNA polymerase