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DNA structure and replication

Total questions: 13

Worksheet time: 8mins

Name
Class
Date
1.

Who used x-ray diffraction to discover the shape of DNA?

a)

Francis Crick

b)

James Watson

c)

Rosalind Franklin

d)

Maurice Wilkins

2.

Which a******(s) took Rosalind Franklin's work and took all the credit? (select all that apply)

a)

Francis Crick

b)

Maurice Wilkins

c)

James Watson

d)

Mr. K

3.

How many strands are there in a DNA molecule?

a)

1

b)

2

c)

3

d)

4

4.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
5.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
6.

If there are three bases in a row that are AGA, what are the bases the will connect to it?

a)

TCT

b)

AGA

c)

CTC

d)

GAG

7.

Cytosine bonds with ______________.

a)

Guanine

b)

Thymine

c)

Cytosine

d)

Adenine

8.

DNA replication starts with ________ molecule(s) of DNA and ends with _________.

a)

1:4

b)

4:1

c)

1:2

d)

2:1

9.

After DNA replication, the resulting DNA molecules are

a)

opposite

b)

reciprocal

c)

identical

d)

randomly ordered

10.

The first step of DNA replication involves

a)

making two complete DNA molecules

b)

"unzipping" the DNA molecule

c)

Adding nucleotides

d)

breaking the nucleus

11.

The second step of DNA replication involves

a)

making two complete DNA molecules

b)

"unzipping" the DNA molecule

c)

Adding nucleotides

d)

breaking the nucleus

12.

The third step of DNA replication involves

a)

making two complete DNA molecules

b)

"unzipping" the DNA molecule

c)

Adding nucleotides

d)

breaking the nucleus

13.

A bunch of ____________ come together to form a DNA molecule.

a)

nucleotides

b)

amino acids

c)

fatty acids

d)

carbohydrates