TRANSCRIPTION QUIZ

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 encodes pili for conjugation

A DNA molecule that is able to replicate and be maintained

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Galactoside permease

β-galactosidase

All of these

Transacetylase

TRUE ANSWER : ?
YOUR ANSWER : ?

The location of first hexameric sequence typically found in pro-karyotic promoters is

at the transcription start site

approximately 25 bases upstream of the transcription start site

approximately 35 bases upstream of the transcription start site

approximately 10 bases upstream of the transcription start site

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a product of transcription?

mRNA

tRNA

rRNA

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

DNA polymerase

RNA polymerase

RNA ligase

DNA ligase

TRUE ANSWER : ?
YOUR ANSWER : ?

An mRNA transcript of a gene contains

a stop codon

all of these

a terminator

a start codon

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the usual sequence of a Pribnow box?

UUUUU

TTGACA

AUAUA

TATAAT

TRUE ANSWER : ?
YOUR ANSWER : ?

Recognition/binding site of RNA polymerase is called

facilitator

terminator

receptor

promoter

TRUE ANSWER : ?
YOUR ANSWER : ?

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

TF II A

TF II D

RNA polymerase

TF II B

TRUE ANSWER : ?
YOUR ANSWER : ?

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

DNA polymerase

DNA gyrase

RNA polymerase

DNA ligase

TRUE ANSWER : ?
YOUR ANSWER : ?