1. The main product of glycolysis under aerobic conditions is
Pyruvate
Lactate
None of these
Both a and b
Answer: Pyruvate
2. The protein moiety of an enzyme is known as
Holo enzyme
Apo enzyme
Co enzyme
Enzyme
Answer: Apo enzyme
3. Yeast extract is an excellent source of
A Vitamin
Proteins
B Vitamin
Carbohydrates
Answer: B Vitamin
4. Example of anaerobic medium
Wilson blair medium
Mac conkey broth
Robertson’s cooked meat medium
EMB agar
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
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
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
Answer: All the three
8. Nitrites are oxidized to nitrates by a microorganism
Nitrosomonas
Nitrosococcus
Nitrobacter
Azatobacter
Answer: Nitrobacter
9. The major constituents in agar are
Fats
Aminoacids
Polysaccharides
Polypeptides
Answer: Polysaccharides
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