chapter 6 DNA structure and replication

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20 Terms

1
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DNA synthesis proceeds:

In the 5' to 3' direction.

In the 3' to 5' direction.

From telomere to centromere.

In both directions at the same time.

In the 5’ to 3’ direction

2
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DNA Replication proceeds in a _____ to ______ direction.

3'; 3'

5'; 3'

3'; 5'

5'; 5'

5’;3’

3
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Which of the following are found in a nucleotide?

phosphate group

five carbon sugar

All of these

nitrogenous base

all of these

4
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At a replication fork, the leading strand is synthesized:

after the lagging strand is complete

continuously

first 

discontinuously

continuously

5
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Contains Cytosine:

Neither

DNA 

Both

RNA

both

6
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Contains ribose:

Neither

DNA

RNA

Both

RNA

7
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Double stranded:

RNA

Both 

Neither

DNA

DNA

8
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Chargaff’s rule states that:

the amount of cytosine equals the amount of thymine.

the amounts of all nucleotides are equal.

the amount of cytosine equals the amount of guanine.

the amount of guanine equals the amount of adenine

the amount of cytosine equals the amount of guanine

9
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In a nucleic acid, the bases are always attached to the _______________ carbon of the sugar.

4'

3'

1'

5'

2'

1’

10
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Thymine is a:

Purine

Pyrimidine

pyrimidine

11
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Adenine is a:

purine

pyrimidine

polyrimidine

amino acid

purine

12
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A _______ is a DNA-protein complex.

complementary base pair

nucleotide

sugar-phosphate backbone

nucleosome

nucleosome

13
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Which of the following most accurately describes okazaki fragments?

Short pieces of DNA produced on the leading strand during DNA replication

Pieces of DNA continuously produced on the leading strand during DNA replication

Short pieces of DNA produced on the lagging stand during DNA replication

Pieces of DNA continuously produced on the lagging strand during DNA replication

Short pieces of DNA produced on the lagging stand during DNA replication

14
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A replicated DNA molecule contains one new strand and one old strand.

True

False

true

15
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Contains Guanine:

DNA

Both

Neither

RNA

both

16
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Contains phosphate:

Neither

RNA

DNA

Both

both

17
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A cell that has DNA comprised of 30% Cytosine contains 30% Guanine.

True

False

true

18
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Which carbon(s) is(are) the hydroxyl group(s) attached on a ribonucleotide?

1' and 5'

2' and 3'

5' only

3' only

2' only

2’ and 3’

19
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Uracil is a:

Pyrimidine

Purine

pyrimidine

20
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A _______ is a DNA base with a single ring structure, for example, cytosine and thymine.

pyrimidine

sugar-phosphate backbone

purine

nucleotide

pyrimidine