Microbial Biotechnology MCQ Questions & Answers | Biotechnology

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31.
Which one of the following options related to the following statements is incorrect?
In comparison to physical/chemical methods of clean up, bioremediation methods

A. Use relatively simple techniques

B. Generally end up with hazardous waste material

C. Are relatively slow

D. Are unobtrusive and non-disruptive

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32.
Match the following products with their starting substrates.

Group I Group II

P. Sake 1. Apple juice

Q. Cider 2. Grape juice

c. Wine 3. Barley

d. Lager 4. Rice

A. P-4, Q-1, R-2, S-3

B. P-1, Q-4, R-2, S-3

C. P-2, Q-3, R-1, S-4

D. P-3, Q-4, R-2, S-1

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33.
A bacterial culture (200 μL containing 1.8 × 10⁹ cells) was treated with an antibiotic Z (50 μg per mL) for 4 h at 37°C. After this treatment, the culture was divided into two equal aliquots.
Set A: 100 μL was plated on Luria agar.
Set B: 100 μL was centrifuged, the cell pellet washed and plated on Luria agar.
After incubating these two plates for 24 h at 37°C, Set A plate showed no colonies, whereas the Set B plate showed 0.9 × 10⁹ cells. This experiment showed that the antibiotic Z is

A. Bacteriostatic

B. Bacteriocidal

C. Bacteriolytic

D. Apoptotic

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34.
A bioremedial solution to reduce oxides of nitrogen and carbon in flue gases is to integrate flue gas emission to

A. Microalgal culture

B. Fish culture

C. Mushroom culture

D. Sericulture

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