BIO 181 Quiz 3 (Modules 7-8)

Question 1

1 / 1 pts

Which enzyme unwraps the double helix?

Correct!

Helicase

DNA polymerase III

DNA polymerase I

Nucleosome

DNA ligase

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Question 2

1 / 1 pts

Which enzyme is used first to permit DNA polymerase III to begin replicating the 3’ strand?

Conservative replication

Parental strand

Correct!

Primase

RNA

Mutation rate

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Question 3

1 / 1 pts

The double helix of DNA is wrapped about 1¾ times around which of these components?

Helicase

DNA polymerase III

DNA polymerase I

Correct!

Nucleosome

DNA ligase

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Question 4

1 / 1 pts

In the lagging stand, the DNA is read from the parental DNA’s 3’ to 5’ end.

Correct!

True

False

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Question 5

1 / 1 pts

Which strand is produced more rapidly?

Okazaki fragment

Lagging strand

Correct!

Leading strand

3’

5’

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Question 6

1 / 1 pts

During DNA replication in the lagging strand there is production of this component?

Correct!

Okazaki fragment

mRNA

tRNA

proteins

none of the above

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Question 7

1 / 1 pts

For DNA Polymerase III to work, which of these components has to act first?

Conservative replication

Newly replicated strand

Correct!

Primase

transfer RNA

Mutation rate

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Question 8

1 / 1 pts

DNA mutation is greatly reduced by enzymes that proof read the newly replicated DNA.

Correct!

True

False

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Question 9

1 / 1 pts

Strands of the backbone of DNA are parallel.

True

Correct!

False

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Question 10

1 / 1 pts

Uridine is a nucleotide in DNA.

True

Correct!

False

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Question 11

1 / 1 pts

Replication of DNA is semi-conservative.

Correct!

True

False

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Question 12

1 / 1 pts

The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5’ to 3” and makes a new DNA strand from 3’ to 5’.

True

Correct!

False

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Question 13

1 / 1 pts

DNA replication in eukaryotes is sped up by multiple origins of replication.

Correct!

True

False

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Question 14

1 / 1 pts

Messenger RNA is double stranded.

True

Correct!

False

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Question 15

1 / 1 pts

The genetic code for the conversion of mRNA codons to proteins has redundancy.

Correct!

True

False

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Question 16

3 / 3 pts

The light reactions produce and and this process also results in the release of .

Answer 1:

Correct!ATP

Correct Answer

NADPH+H+

Answer 2:

Correct!NADPH+H+

Correct Answer

ATP

Answer 3:

Correct!oxygen

Question 17

3 / 3 pts

The Calvin-Benson cycle takes in and from the light reaction and also to make carbohydrates.

Answer 1:

Correct!ATP

Correct Answer

NADPH+H+

Answer 2:

Correct!NADPH+H+

Correct Answer

ATP

Answer 3:

Correct!carbon dioxide

Question 18

1 / 1 pts

The antenna system is in the _________ membranes.

Correct!

Correct Answers

thylakoid

Question 19

1 / 1 pts

The most abundant protein in the world is called __________.

You Answered

Correct Answers

rubisco

Question 20

2 / 2 pts

Protein synthesis changes from the language of to the language of .

Answer 1:

Correct!nucleotides

Answer 2:

Correct!amino acids

Quiz Score: 25 out of 25