TRANSCRIPTION QUIZ

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

corepression

attenuation

desiccation

TRUE ANSWER : ?
YOUR ANSWER : ?

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

TF II D

TF II A

RNA polymerase

TF II B

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Transacetylase

All of these

β-galactosidase

Galactoside permease

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a product of transcription?

mRNA

tRNA

all of these

rRNA

TRUE ANSWER : ?
YOUR ANSWER : ?

Which eukaryotic RNA polymerase makes tRNA's?

RNA polymerase 3

Any of these

RNA polymerase 1

RNA polymerase 2

TRUE ANSWER : ?
YOUR ANSWER : ?

An mRNA transcript of a gene contains

a terminator

a stop codon

a start codon

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The components found in all prokaryotic transcription terminators is

a poly-U region

Rho factor

none of these

a hairpin structure

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following component of RNA polymerase facilitates the recognition of promoter sequences?

c subunit

a subunit

s subunit

b subunit

TRUE ANSWER : ?
YOUR ANSWER : ?

The sigma factor

accomplishes DNA restriction

provides the catalytic function of cleaving off pyrophosphates during mRNA synthesis

recognizes the promotor

is responsible for recognizing the termination sequence

TRUE ANSWER : ?
YOUR ANSWER : ?

Recognition/binding site of RNA polymerase is called

promoter

facilitator

receptor

terminator

TRUE ANSWER : ?
YOUR ANSWER : ?

↑