bacterial_transcription

Question 1 of 8

Animation Assessment

Question

What is a transcription unit?

a stretch of DNA that contains a single gene and the sequences that control it

a stretch of DNA that contains a gene and its regulatory sequences

a stretch of DNA that encodes a single RNA molecule and other sequences necessary for transcription

a stretch of DNA that encodes transcription factors

a piece of RNA and its associated proteins

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Question

A transcription unit contains which of the following?

RNA coding region

terminator

promoter

A and C

A, B, and C

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Question

Which of the following are critical elements of a bacterial promoter?

inverted repeat

–35 consensus sequence

poly A

A and B

B and C

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Question

Which of the following are critical elements of a bacterial terminator?

-10 consensus sequence

poly A

inverted repeat

A and B

B and C

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Question

The transcription start site is:

at the beginning of the promoter of a transcription unit.

after the promoter of a transcription unit.

the first amino acid of a polypeptide.

the first nucleotide of the mRNA.

in the terminator of a transcription unit.

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Question

A functional RNA polymerase holoenzyme contains which of the following?

a primer

a small ribosomal subunit

a ribosome

a sigma subunit

All of the above.

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Question

Which of the following is true of RNA synthesis in bacteria?

It occurs in a transcription bubble.

It occurs in the 5’ to 3’ direction.

It is complementary to the template strand of DNA.

All of the above are true.

Only A and B are true.

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Question

What causes the formation of an RNA hairpin?

the –35 consensus sequence of the promoter

the inverted repeat of the terminator

rho sequences in the terminator

the poly A of the terminator

the hairpin consensus sequence in the terminator

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Chapter 13. Animation Activity: Bacterial Transcription

Animation Assessment

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