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Watson and Crick AP Bio

Total questions: 6

Worksheet time: 3mins

Name
Class
Date
1.

Which of the following is a correct base pair for DNA, as a part of Watson and Crick’s DNA model?

a)

Adenine and Adenine

b)

Guanine and Cytosine

c)

Cytosine and Thymine

d)

Adenine and Cytosine

2.

The ________ are on the inside of the helix, and the ______ are on the outside.

a)

Bases, phosphates

b)

Phosphates, phosphates

c)

Phosphates, bases

d)

Bases, bases

3.

According to Watson and Crick, complementary bases are held together by which SPECIFIC type of bond?

a)

Ionic

b)

Intramolecular

c)

Intermolecular

d)

Hydrogen

4.

According to Watson and Crick’s findings, DNA is almost always _________-handed and is composed of ________ strands.

a)

Left, 4

b)

Left, 2

c)

Right, 4

d)

Right, 2

5.

According to Watson and Crick, what molecule “unzips” DNA during replication?

a)

Helicase

b)

RNA Primase

c)

DNA Ligase

d)

DNA Polymerase

6.

Regarding Hydrogen bonds, Guanine and Cytosine form _______ Hydrogen bonds and Adenine and Thymine form ______ Hydrogen bonds.

a)

2, 3

b)

3, 2

c)

2, 2

d)

3, 3