TRANSCRIPTION QUIZ

The synthesis of mRNA based on a DNA template is called

translation

transcription

DNA replication

DNA restriction

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statement defines a replicon?

A DNA molecule that encodes pili for conjugation

A DNA molecule that is able to replicate and be maintained

The enzyme responsible for transposition

A DNA template which is used in transcription

TRUE ANSWER : ?
YOUR ANSWER : ?

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

RNA polymerase

RNA ligase

DNA ligase

DNA polymerase

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a product of transcription?

tRNA

mRNA

all of these

rRNA

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the usual sequence of a Pribnow box?

AUAUA

TATAAT

TTGACA

UUUUU

TRUE ANSWER : ?
YOUR ANSWER : ?

The components found in all prokaryotic transcription terminators is

a poly-U region

none of these

Rho factor

a hairpin structure

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Galactoside permease

Transacetylase

β-galactosidase

All of these

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YOUR ANSWER : ?

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

activation

attenuation

corepression

desiccation

TRUE ANSWER : ?
YOUR ANSWER : ?

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

TF II B

RNA polymerase

TF II A

TF II D

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YOUR ANSWER : ?

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

beta

delta

sigma

gamma

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YOUR ANSWER : ?

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