MCQ on Nutrition of Bacteria

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1. The main product of glycolysis under aerobic conditions is

  • Pyruvate
  • Lactate
  • None of these
  • Both a and b

[expand title=”Show Answer”]Answer: Pyruvate

2. The protein moiety of an enzyme is known as

  • Holo enzyme
  • Apo enzyme
  • Co enzyme
  • Enzyme

[expand title=”Show Answer”]Answer: Apo enzyme

3. Yeast extract is an excellent source of

  • A Vitamin
  • Proteins
  • B Vitamin
  • Carbohydrates

[expand title=”Show Answer”]Answer: B Vitamin

4. Example of anaerobic medium

  • Wilson blair medium
  • Mac conkey broth
  • Robertson’s cooked meat medium
  • EMB agar

[expand title=”Show Answer”]Answer: Robertson’s cooked meat medium

5. Biological Oxygen Demand (BOD) is a measure of:

  • Industrial wastes poured into water bodies
  • Extent to which water is polluted with organic compounds
  • Amount of carbon monoxide inseparably combined with haemoglobin
  • Amount of oxygen needed by green plants during night

[expand title=”Show Answer”]Answer: Industrial wastes poured into water bodies

6. An example of competitive inhibition of an enzyme is the inhibition of

  • Succinic dehydrogenase by malonic acid
  • Cytochrome oxidase by cyanide
  • Hexokinase by glucose-6-phosphate
  • Carbonic anhydrase by carbon dioxide

[expand title=”Show Answer”]Answer: Succinic dehydrogenase by malonic acid

7. The following organisms have been proposed as sources of single cell protein

  • Bacteria
  • Yeasts
  • Algae
  • All the three

[expand title=”Show Answer”]Answer: All the three

8. Nitrites are oxidized to nitrates by a microorganism

  • Nitrosomonas
  • Nitrosococcus
  • Nitrobacter
  • Azatobacter

[expand title=”Show Answer”]Answer: Nitrobacter

9. The major constituents in agar are

  • Fats
  • Aminoacids
  • Polysaccharides
  • Polypeptides

[expand title=”Show Answer”]Answer: Polysaccharides

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