List of top Microbiology Questions on Microbiology

Select correct statements regarding mutation. A. A point mutation involves substitution of a single nucleotide pair.
B. Frameshift mutations result from insertion or deletion of nucleotides not in multiples of 3.
C. Silent mutations always alter the amino acid sequence of a protein.
D. Mutagens can be physical, chemical or biological agents.
E. Auxotrophs can be easily grown on minimal media.
Choose the correct answer from the options given below :

Which of the following coenzymes/prosthetic groups are required by PDH complex for its functioning ? A. NAD
B. TPP
C. FMN
D. FAD
E. ATP
Choose the correct answer from the options given below :

Arrange the components of photosynthetic machinery of purple bacteria in a sequence followed for flow of electrons :
A. Quinone
B. P870
C. Cyt \(bc_1\) complex
D. Cyt \(c_2\)
E. Pheophytin
Choose the correct answer from the options given below :

Arrange the following steps in lac operon induction in correct order :
A. Formation of mRNA
B. Binding of lactose to repressor
C. RNA polymerase binds to promoter
D. Transcription of structural genes
E. Removal of repressor from operator
Choose the correct answer from the options given below :

Arrange the steps of endospore formation in correct order :
A. Cortex and spore coat formation
B. Maturation and release of endospore
C. DNA replication and axial filament formation
D. Engulfment of forespore
E. Asymmetric septum formation
Choose the correct answer from the options given below :

Given below are two statements :
one is labelled as
Assertion (A) and the other is labelled as
Reason (R).
Assertion (A) :
Electrophoretic procedures are generally not used to purify proteins.
Reason (R) :
Electrophoresis is an analytical metho
D.
In the light of the above statements, choose the most appropriate answer from the options given below :

Transport of molecules smaller than about 600 daltons across the outer membrane of bacteria is facilitated by trimeric integral membrane proteins called:

The Rolling tube technique is used for cultivation of:

Mannitol salt agar is selective because it:

Which of the following chromatography separates according to the sign and magnitude of the net electric charges of the proteins at a given pH?

Anaerobic microbes cannot survive in the presence of oxygen due to lack of:

Which staining technique is used specifically to identify Mycobacterium tuberculosis?

Who is the father of microbiology?