Cell Biology Gene Expression Bacteria Online Exam Quiz
Cell Biology Gene Expression Bacteria GK Quiz. Question and Answers related to Cell Biology Gene Expression Bacteria. MCQ (Multiple Choice Questions with answers about Cell Biology Gene Expression Bacteria
The lac operon consists of ____ structural genes.
Options
A : 1
B : 2
C : 3
D : 4
When was the operation mechanism of a bacterial operon first elucidated?
Options
A : 1961
B : 1971
C : 1981
D : 1991
In bacteria, mRNAs bound to small metabolites are called ______________
Options
A : euchromatin
B : riboswitches
C : heterochromatin
D : nucleosome
Which of the following acts as an inducer in the lac operon?
Options
A : glucose
B : tryptophan
C : lactose
D : galactose
The first step in catabolism of lactose by the bacteria is ________________ of a linkage bond.
Options
A : hydrolysis
B : oxidation
C : reduction
D : alkylation
Enzymes of __________________________ are clustered together in a bacterial operon.
Options
A : metabolic pathway
B : transcription
C : transfusion
D : transformation
Lactose can be a nutrient source for bacteria, it is a _____________________
Options
A : monosaccharide
B : lipid
C : disaccharide
D : polysaccharide
In a bacterial operon, which is located downstream of the structural genes?
Options
A : operator
B : inducer
C : promoter
D : regulatory gene
The capability of the repressor to bind the operator depends upon _____________
Options
A : pH
B : conformation
C : temperature
D : moisture
The lac operon is under positive control, a phenomenon called _________________
Options
A : regulation
B : mutation
C : lactose-effect
D : glucose-effect
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