LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The function of the operator is to
A
regulate access of RNA polymerase to specific genes
B
turn on and off the molecules of tRNA
C
control the process of transcription within the nucleus
D
generate amino acids for protein synthesis
Explanation: 

Detailed explanation-1: -there are signals called “operators” where specialized proteins called repressors bind to the DNA just upstream of the start point of transcription and prevent access to the DNA by RNA polymerase. These repressor proteins thus prevent transcription of the gene by physically blocking the action of the RNA polymerase.…

Detailed explanation-2: -An operator sequence located at the 5′ end serves as a binding site for a repressor protein that blocks RNA polymerase.

Detailed explanation-3: -RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.

There is 1 question to complete.