Test Your Knowledge - Free MCQ PRACTICE
MICROBIOLOGY
by Dr K Chaudhry
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A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. The method of successful treatment of botulism prior to appearance of botulism symptoms involve administration of
A. antibiotic
B. analgesic
C. antitoxin
D. antipyretic

2. Suspension cultures consist of cells and cell aggregates, growing dispersed in
A. liquid medium
B. solid nutrient medium
C. solid or liquid medium
D. none of these

3. Flat sour spoilage of acid foods is caused by
A. B. coagulans
B. both A and B
C. stearothermophillus
D. A

4. The mutation which will not affect the length of a protein is,
A. nonsense mutation
B. missense mutation
C. frameshift mutation
D. all of these

5. Which algal division is divided up into three main groups consisting of the golden-brown algae, the yellow-green algae and the diatoms?
A. Chlorophyta
B. Chrysophyta
C. Phaeophyta
D. Pyrrophyta

6. Abnormal fermentation of cabbage may result in a cheese like odour caused by
A. propionic acid
B. butyric acid
C. caprioc acid and Valeric acid
D. all of these

7. What can be coated to the plastic dish if an ELISA is performed to directly detect polio virus?
A. Patient serum
B. Anti-polio antibody
C. Polio capsid protein
D. Colored substrate

8. The commonest bacterial infection in HIV disease is/are
A. mycobacterial infection
B. salmonella infection
C. bartonella infection
D. all of these

9. The gram-positive bacteria lack __________ structure/component?
A. outer membrane
B. murein
C. teichoic acid
D. plasma membrane

10. All of the following species are considered coliforms except
A. Enterobacter aerogenes
B. Klebsiella pneumoniae
C. Salmonella typhi
D. Escherichia coli

11. Parsnip like odour and taste in beer is caused by
A. Flavobacterium proteus
B. Zygomonas anaeroium
C. Lactobacillus patorianus
D. S. carlsbergensis

12. Which of the following conditions can be caused by Plesiomonas?
A. Septicaemia
B. Gastroenteritis
C. Cellulites
D. All of these

13. Which of the following is not true regarding IgE antibodies
A. It mediates release of histamine and other chemical mediators
B. It is the primary antibody involved in allergic reactions
C. It is involved in anti-parasitic immune responses
D. May cross the placenta and fix complement

14. Gram staining was introduced by
A. Christian gram
B. Alfred Gram
C. Robertcook
D. Louis Pasteur

15. The most important organism involved in manufacture of Koji is
A. Aspergillus oryzae
B. Aspergillus soyae
C. both A and B
D. Lactobacillus lactis

16. An excessively high temperature in the fermentation of sauerkraut may inhibit the growth of
A. Leuconostoc
B. Pediococcus cerevisiae
C. both A and B
D. none of these

17. Which of the following Staphylococcal haemolysins does not possess leucocidal activity?
A. a haemolysin
B. ? haemolysin
C. ß haemolysin
D. d haemolysin

18. Colonies resembling molar teeth are produced by
A. Nocardia brasiliensis
B. N. asteroids
C. Actinomyces israelii
D. Actinomadura madurae

19. Holozoic nutrition is characterized by
A. phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
B. pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
C. phagocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles
D. photosynthesis

20. The technique first described to determine the incipient spoilage in meat was
A. homogenate extract volume (HEV)
B. agar Plate Count (APC)
C. extract Release Volume (ERV)
D. none of the above

Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc