TRANSLATION AND REGULATION QUIZ

Which of the following enzyme is used for synthesis of RNA under the direction of DNA?

DNA polymerase

RNA ligase

DNA ligase

RNA polymerase

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YOUR ANSWER : ?

Which of the following proteins first binds to TATA box during transcription?

TF II B

TF II D

RNA polymerase

TF II A

TRUE ANSWER : ?
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The sigma factor

is responsible for recognizing the termination sequence

recognizes the promotor

accomplishes DNA restriction

provides the catalytic function of cleaving off pyrophosphates during mRNA synthesis

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Which of these catalyzes the synthesis of RNA from a DNA template?

RNA polymerase

DNA ligase

DNA polymerase

DNA gyrase

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Which of the following statement defines a replicon?

A DNA template which is used in transcription

The enzyme responsible for transposition

A DNA molecule that is able to replicate and be maintained

A DNA molecule that encodes pili for conjugation

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A level of regulation, demonstrated by the termination of transcription if tryptophan is abundant, by the tryptophan operon in E.coli cells is called

desiccation

corepression

attenuation

activation

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A specific __________ factor helps RNA polymerase bind to late promoters and transcribe late genes.

gamma

beta

delta

sigma

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Recognition/binding site of RNA polymerase is called

promoter

facilitator

receptor

terminator

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Which of the following enzyme(s) is/are required for lactose fermentation?

Transacetylase

Galactoside permease

All of these

β-galactosidase

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YOUR ANSWER : ?

What is the usual sequence of a Pribnow box?

UUUUU

TATAAT

AUAUA

TTGACA

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