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990+ Microbiology Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Agriculture (BSc agri) .

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Chapter: Medical Microbiology
751.

Incubation period for infective Hepatitis disease

A. 45 – 80 day
B. 15 – 35 days
C. 35 – 50 days
D. 5 – 15 days
Answer» D. 5 – 15 days
discuss
752.

All of the following are bacteriostatic chemotherapeutic agents except

A. Bacitracin
B. Chloramphenicol
C. Novobiocin
D. Tetracycline
Answer» A. Bacitracin
discuss
753.

Kinetosomes are observed in

A. Algae
B. Fungi
C. Protozoa
D. Viruses
Answer» C. Protozoa
discuss
754.

β-lactum ring is present in

A. Erythromycin
B. Penicillin
C. Tetracyclins
D. Chromphenical
Answer» B. Penicillin
discuss
755.

Antibiotic produced from streptomyces orientalis is

A. Streptomycin
B. Penicillin
C. Vancomycin
D. Both a and b
Answer» C. Vancomycin
discuss
756.

The drug of choice for dermal, oral and vaginal candidiasis is

A. Griseofulvin
B. Amphoterein B
C. Gentian violet
D. Nystatin
Answer» D. Nystatin
discuss
757.

Botulism means

A. Food adultration
B. Food poisioning by streptococcus bacteria
C. Chemical contamination of food
D. Food processing
Answer» C. Chemical contamination of food
discuss
758.

Chloramphenicol is obtained from

A. Streptomyces griseus
B. Streptomyces venezuelae
C. Streptomyces pyrogenes
D. None of these
Answer» B. Streptomyces venezuelae
discuss
759.

Streptomycin is obtained from

A. Streptococcus species
B. Streptomyces griseus
C. Straphylococcus aureus
D. None of these
Answer» A. Streptococcus species
discuss
760.

The treatment required for small bodies of water is

A. Disinfection
B. Filtration
C. Purification
D. All of these
Answer» D. All of these
discuss
761.

Surface ropiness is caused by

A. Alkaligenes viscolactis
B. Streptococcus
C. both a and b
D. None of these
Answer» D. None of these
discuss
762.

Septicaemia is

A. Bacteria in blood
B. Toxin in blood
C. Pus in blood
D. Multiplication of bacteria and toxins in blood
Answer» D. Multiplication of bacteria and toxins in blood
discuss
763.

In AIDS, Kaposis sarcoma may respond to

A. Interleukin – 2 infusion
B. Azathioprine
C. Alpha interferon
D. None of these
Answer» C. Alpha interferon
discuss
764.

Ciprofloxacin acts by inhibiting

A. Cellwall synthesis
B. RNA synthesis
C. Folate synthesis
D. DNA gyrase
Answer» D. DNA gyrase
discuss
765.

Lyme disease is caused by

A. Bacteria
B. Fungi
C. Spirochaete
D. Virus
Answer» C. Spirochaete
discuss
766.

Toxic shock syndrome is caused by

A. Staph. albu
B. Staph. aureus
C. Strep. viridana
D. None of these
Answer» B. Staph. aureus
discuss
767.

Black water fever is caused by

A. P. vivax
B. P. falciparum
C. P. ovale
D. None of these
Answer» B. P. falciparum
discuss
768.

Mantoux test detects

A. M. tuberculosi
B. Cynaobacteria
C. Clostridia
D. Both a and b
Answer» A. M. tuberculosi
discuss
769.

The antibiotic acting on cell wall is

A. Bactracin
B. Penicillin
C. Cyclosporine
D. All of these
Answer» D. All of these
discuss
770.

Aflatoxin is produced by

A. Aspergillus sp
B. Penicillium sps
C. Alternaria sps
D. None of these
Answer» A. Aspergillus sp
discuss
771.

Penicillin is discovered by

A. Fleming
B. Pasteur
C. Koch
D. None of these
Answer» A. Fleming
discuss
772.

Antibiotics used in combination may demonstrate

A. Synergism
B. Antaginism
C. both
D. None of these
Answer» C. both
discuss
773.

The drug of choice in anaphylactic shock is

A. Histamine
B. Corticosteroid
C. Epinephrine
D. None of these
Answer» C. Epinephrine
discuss
774.

Drugs of choice for treatment of Mycoplasma infections:

A. Tetracycline
B. Erythromycin
C. a and b
D. Penicillins
Answer» C. a and b
discuss
775.

A number of viruses are known to infect mycoplasmas, called

A. Bacteriophages
B. Mycoplasma phages
C. Virions
D. Tiny strains
Answer» B. Mycoplasma phages
discuss
776.

The following are true about Rickettsiae.

A. Unicellular organisms
B. Prokaryotic intracellular parasites
C. Presence of 70 S ribosomes
D. It causes hemolysis in human beings
Answer» D. It causes hemolysis in human beings
discuss
777.

The causative agent of scrub typhus:

A. R.Quintana
B. R.rickettsii
C. R.orinetalis
D. R.prowazekii
Answer» C. R.orinetalis
discuss
778.

Lymphogranuloma venerum (LGV) is a sexually transmitted disease is caused by

A. Copthalmia
B. C.trachomatis
C. C.pneumonias
D. C.psittasi
Answer» B. C.trachomatis
discuss
779.

Intradermal test employed for diagnosis of LGV is

A. Frei test
B. Mantoux test
C. Schick test
D. Dick test
Answer» A. Frei test
discuss
780.

Which algae is pathogenic to human?

A. Cephaloeuro
B. Ulothrix
C. Macrocystis
D. Prototheca
Answer» D. Prototheca
discuss
781.

Erythromycin is obtained from

A. S.griseu
B. S.rimosus
C. S.scabies
D. S.erythraeus
Answer» D. S.erythraeus
discuss
782.

Common cold is caused by

A. Adeno viru
B. Corono virus
C. Hepatitis virus
D. Pox virus
Answer» B. Corono virus
discuss
783.

The causative agent of conjunctivitis:

A. Adeno viru
B. Corono virus
C. Paramyxo virus
D. None of these
Answer» A. Adeno viru
discuss
784.

Antibiotics used for treatment of cholera are

A. Tetracycline
B. Penicillins
C. Streptomycines
D. None of these
Answer» A. Tetracycline
discuss
785.

Salmonella typhi is causative organism of

A. Undulent fever
B. Remittent fever
C. Dengue fever
D. Enteric fever
Answer» D. Enteric fever
discuss
786.

Which of the following Salmonella paratyphi is the commonest in India?

A. A
B. B
C. C
D. None of these
Answer» A. A
discuss
787.

In enteric fever, the organ lodging maximum number of the organism is

A. Liver
B. Gall bladder
C. Small intestine
D. Large intestine
Answer» B. Gall bladder
discuss
788.

True about Enteric fever is

A. Bacteraemia in first week
B. Carrier in 90%
C. All serotypes cause the disease
D. Rosy spots on 18th day
Answer» A. Bacteraemia in first week
discuss
789.

Gastroenteritis is caused by

A. Shigella
B. V.cholerae
C. V.cholera Parahaenolyticus
D. S.typhi
Answer» C. V.cholera Parahaenolyticus
discuss
790.

E.coli produces the following toxins:

A. Enterotoxin
B. Endotoxins
C. Verocytotoxins
D. Hemolysins
Answer» B. Endotoxins
discuss
791.

Diphtheria is caused by

A. Corynebacterium diphtheriae
B. C. Bovis
C. C. Jeikeium
D. C. equi
Answer» A. Corynebacterium diphtheriae
discuss
792.

Causative organism of diphtheria was first demonstrated by

A. Robert Koch
B. Lois Pasteur
C. Klebs and Loeffler
D. Volhard and Fahr
Answer» C. Klebs and Loeffler
discuss
793.

Coryne bacterium is

A. Gram positive
B. Resistant to Penicillin
C. Gram negative
D. Resistant to Chloramphenicol
Answer» A. Gram positive
discuss
794.

C. diphtheriae consists of

A. Startch granules
B. Polymeta phosphate granules
C. Lipid granules
D. None of these
Answer» B. Polymeta phosphate granules
discuss
795.

The incubation period of diphtheriae is

A. Upto 2 week
B. Upto 1 week
C. 2–4 weeks
D. None of these
Answer» C. 2–4 weeks
discuss
796.

Diphtheria virulence test is

A. Ascoli’s thermoprecipitation test
B. Eleck’s gel precipitation test
C. C.R.P test
D. M.R.T. test
Answer» B. Eleck’s gel precipitation test
discuss
797.

Diptheria toxoid is prepared by using

A. Aldehyde
B. Formalin
C. Phenols
D. None of these
Answer» B. Formalin
discuss
798.

Diphtheria is an example of

A. Bacteraemia
B. Pyaemia
C. Septicemia
D. Toxaemia
Answer» D. Toxaemia
discuss
799.

Main symptom of tuberculosis is

A. Tubercle formation
B. Liquid formation
C. Both a and b
D. None of these
Answer» A. Tubercle formation
discuss
800.

BCG vaccine is for the prevention of

A. Brucellosi
B. Diphtheria
C. Botulism
D. Tuberculosis
Answer» D. Tuberculosis
discuss

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