4 DECEMBER 2020 CURRENT AFFAIRS QUIZ

The sigma factor

accomplishes DNA restriction

recognizes the promotor

provides the catalytic function of cleaving off pyrophosphates during mRNA synthesis

is responsible for recognizing the termination sequence

TRUE ANSWER : ?
YOUR ANSWER : ?

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

DNA ligase

RNA polymerase

RNA ligase

DNA polymerase

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a product of transcription?

all of these

tRNA

rRNA

mRNA

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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

corepression

desiccation

attenuation

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statement defines a replicon?

A DNA molecule that encodes pili for conjugation

A DNA template which is used in transcription

The enzyme responsible for transposition

A DNA molecule that is able to replicate and be maintained

TRUE ANSWER : ?
YOUR ANSWER : ?

An mRNA transcript of a gene contains

all of these

a stop codon

a start codon

a terminator

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YOUR ANSWER : ?

Recognition/binding site of RNA polymerase is called

promoter

facilitator

receptor

terminator

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YOUR ANSWER : ?

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

TF II A

TF II D

TF II B

RNA polymerase

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 : ?

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

DNA polymerase

RNA polymerase

DNA ligase

DNA gyrase

TRUE ANSWER : ?
YOUR ANSWER : ?