MICROBIOLOGY MCQS

1.	The staining technique used to stain the metachromatic granules of Corynebacterium a. Giemsa stain         b. Alberts stain c. Acid fast staining   d. Both a and b	D
2.	Match the following tests with their respective applications A to E: 1. Schick test                 A. Tuberculosis 2. Mantoux test               B. Detection of extraneous microorganisms 3. Sterility test                 C. Diphtheria toxin 4. Potency test                D. Usefulness of immunological products Select a.1-c,2-a,3-b,4-d          b.1-a,2-c,3-b,4-d c.1-c,2-a,3-d,4-b          d.1-a,2-c,3-d,4-b	a
3.	In autoclave, the principle involved is a. Dry heat                        b. Moist heat c. Steam under pressur   d. Both b and c	d
4.	The penicillin produced in large scale submerged fermentations are a. Penicillin-A          b. Penicillin-D c. Penicillin-G          d. None of these	C
5.	The strain of fungi used for the large scale production of penicillin is a. Penicillium chrysogenum     b. P-notatum c. Streptomyces Aurecus         d. Saccharomyces sps	A
6.	Vitamin B12 can be estimated and determined by using organism a. Lactobacillus sps                b. Lactobacillus Leichmanni c. Bacillus subtilis                    d. E.Coli	B
7.	What is the strength of the bond between antigen and antibody? a. Affinity               b. Avidity c. Covalent            d. None of these	B
8.	Analysis of protein antigen is by a. Southern blot     b. Northern blot c. Western blot       d. None of these	C
9.	Example for live vaccine is a. Rubella & BCG               b. Polio & TAB c. Diphtheria & Tetanus     d. Hepatitis A & Rabies	A
10.	Vaccines are prepared from killed microbes, they are a. Inactivated (killed) vaccine   b. Attenuated vaccines  c. Autogenous vaccine           d. None of these	A
11.	Immunoglobulin is associated with anaphylactic delayed hypersensitivity reaction a. IgE                     b. IgA c. IgD                     d. IgM     e. IgG	A
12.	Killed, polio vaccine is a. Sabin vaccine       b. Salk c. BCG                      d. TAB	A
13.	Antigen-antibody reactions are a. Reversible              b. Irreversible c. Specific                   d. Both a and b	D
14.	The protein moiety of an enzyme is known as a. Holo enzyme     b. Apo enzyme c. Co enzyme        d. Enzyme	B
15.	Bacteria which need oxygen for growth are called a. Thermophilic bacteria                  b. Microaerophilic bacteria c. Facultative anaerobic bacteria     d. Mycobacteria	B
16.	The most active stage in the sigmoid curve of bacteria in which maximum growth is attained a. Lag phase        b. Stationary phase c. Decline phase    d. Log phase	D
17.	Chloramphenicol is obtained from a. Streptomyces griseus         b. Streptomyces venezuelae c. Streptomyces pyrogenes   d. None of these	B
18.	The enzymes which are commonly used in genetic engineering are a. Exonuclease and ligase b. Restriction endonuclease and polymerase c. Ligase and polymerase d. Restriction endonuclease and ligase	A
19.	DNA transfer from one bacterium to another through phages is termed as a. Transduction                   b. Induction c. Transfection                    d. Infection	A
20.	Blood agar medium is a. Enrichment medium       b. Enriched medium c. Selective medium         d. Differential medium	B
21.	The differences between Gram positive and Gram negative bacteria is shown to reside in the a. Cell wall              b. Nucleus c. Cell membrane   d. Mesosomes	A