List of top Microbiology Questions on Biology of Microorganisms

Choose the most appropriate answer:
A. Enterobius vermicularis-pin worm
B. Strongyloids stercoralis-Thread worm
C. Wuchereria bancrofti-Filarial worm
D. Dracunculus medinensis-Guinea worm

Match the process of reproduction and genetic exchange under Column I with the explanation under Column II. Match list-1 with List-II:

	List I Process of reproduction and genetic exchange		List II Explanation
A	Binary Fission	I	Transfer of genetic material from the donor recipient bacterium through cell contact
B	Transformation	II	Common vegetative reproduction
C	Transduction	III	Transfer of genetic material in bacteria through virus
D	Conjugation	IV	Horizontal gene transfer by taking up of foreign genetic material (naked DNA)

Which of the following conjugation reactions DOES NOT REQUIRE reaction with an activated conjugating agent?

Match List I with List II

	List I-Classification of Bacteria		List II-Example
A	Gram positive spherical shaped nonmotile bacteria	I	Clostridium tetani
B	Gram positive sporulating obligate anaerobic bacteria	II	Bacillus anthracis
C	Gram positive rod shaped nonsporulating bacteria	III	Streptococcus sp..
D	Gram positive sporulating rod shaped motile bacteria	IV	Corynebacterium diphtheriae
E	-	V	E.coli

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): Gram negative bacteria do not retain the primary stain when washed with alcohol and subsequently stained again with secondary stain.
Reason (R): The outer membrane of gram negative bacteria contains lipopolysaccharides.
In light of the above statements, choose the correct answer from the options given below

The following gram positive bacteria species is positive for the coagulase test (a test for the ability of bacteria to cause blood plasma to clot).

What is the effective ratio of methyl paraben and propyl paraben for anti-microbial activity?

Which microorganism is involved in the assay of Rifampicin

Which of the following method is useful for measuring the number of viable cells in a culture

Which of the following in correct about parenteral nutrition

In which type of bacteria the cell wall is thicker

Which of the following pairs is mismatched

Which of the following is a selective medium for the growth of vibreochelerae