Quiz 6 Flashcards

1
Q

The enzyme responsible for inserting negative supercoils into DNA is ___.

A

Gyrase

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2
Q

The base pairing between ___ is especially strong because it contains an additional ___ bond, compared to ___.

A

C and G; hydrogen; A and T

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3
Q

In most prokaryotes, DNA replication proceeds:

A

Bidirectionally

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4
Q

DNA forms a double helix because of ___ and the ___ pairing of the two strands.

A

Complementarity; antiparallel

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5
Q

The strongest electron acceptor in nature is:

A

Oxygen

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6
Q

Transposable elements are:

A

Segments of DNA that can move

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7
Q

___ are genetic elements that replicate separately from the chromosome.

A

Plasmids

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8
Q

Why does fermentation have a relatively low ATP yield compared to aerobic respiration?

A

Aerobic catabolism uses oxidative phosphorylation

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9
Q

Viruses contain genomes of:

A

Either DNA or RNA

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10
Q

During fermentation, ATP is usually produced by:

A

Substrate-level phosphorylation

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