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Strerilisation Cultrure Media And Pure Culture Techniques-Part 1
See all quizzes of Strerilisation Cultrure Media And Pure Culture Techniques-Part 1 here:
1 The medium used in membrane filter
technique was
a. EMB agar b. EMR-Vp medium
c. Lactose broth d. Endo agar
2. Lysol is a
a. Sterilent b. Disinfectant
c. Antiseptic d. Antifungal agent
3. Which of the following is a neutral stain?
a. Picric acid b. Gmiemsa
c. Neutral red d. Malachite green
4. Peptone water medium is an example for
a. Synthetic medium
b. Semisynthetic medium
c. Differential medium
d. None of these
5. The method in which the cells are frozen
dehydrated is called
a. Pasteurization b. Dessication
c. Disinfection d. Lypophilization
6. The technique used to avoid all
microorganisms is accomplished by
a. Sterlization
b. Disinfection
c. Surgical sterilization
d. Disinfection Sterilization
7. Thermal death time is
a. Time required to kill all cells at a given
temperature
b. Temperature that kills all cells in a given time
c. Time and temperature needed to kill all cells
d. All of the above
8. A culture medium the exact composition
of which is not known was called as
a. Simple b. Complex
c. Defined d. Natural
9. Elek’s gel diffusion test is used for the
detection of
a. Tetani toxin b. Cholera toxin
c. Diophtheria toxin d. Toxoid
10. Temperature required for pasteurization
is
a. Above 150oC b. Below 100oC
c. 110oC d. None of these
11. Separation of a single bacterial colony is
calle
a. Isolation b. Separation
c. Pure culturing d. All of these
12. Which of the following is ionizing
radiation?
a. U.V. rays b. IR
c. γ-rays d. None of these
MCQs IN MICROBIOLOGY
13. Which of the following induces
dimerisation of thymine?
a. X-rays b. U.V. rays
c. ã-rays d. None of these
14. When food material are preserved at a
temperature just above freezing
temperature, the process is called.
a. Freezing b. Pasteurisation
c. Chilling d. Frosting
15. Which of the following method of
sterilization has no effect on spores?
a. Drying b. Hot air oven
c. Autoclave d. None of these
16. Treponema pallidum can be best
indentified using
a. Fluorescence microscope
b. Bright field microscope
c. Dark field microscope
d. Flourescence microscope
17. Autoclaving is carried at
a. Dry heat
b. Atmospheric pressure
c. 120oC
d. All of these
18. Temperature in pasteurization is
a. 62.8oC b. 35.7oC
c. 68.2oC d. 60.8oC
19. The bacterial culture prepared by pure
culture method is
a. Inoculum b. Suspension
c. Dilution d. None of these
20. Algae are rich in
a. Carbohydrates b. Proteins
c. Vitamins d. All of these
21. L-Lysine is produced from
a. Corynebacterium glutamicum
b. Clostridium botulinum
c. Mycobacterium sps
d. Pseudomonas
22. The orderly increase in the quantity of all
of the cellular components is known as
a. Reproduction b. Growth
c. Binary fission d. None of these
23. Theobacillus thio oxidans grow at pH
a. 7.0 b. 1.0
c. 6.0 d. 9.5
24. Slow freezing requires the conditions
a. 0oC to 15oC for 15 min.
b. – 6 oC to – 10oC for 10 min.
c. – 15oC to 3 to 72 hrs.
d. None of these
25. Discontinuous heating is called
a. Pasteurization b. Sterilization
c. Fermentation d. Tindalisation
