Microbes in Human Welfare MCQs | Microbes in Human Welfare Multiple Choice Questions (MCQS) and Answers

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Questions
1 Cheese is a product of:
A Distillation
B Fermentation
C Pasteurisation
D Dehydration

Answer:Fermentation
2 Which one of the following alcoholic drinks is produced without distillation?
A Wine
B Whisky
C Rum
D Brandy

Answer:Wine
3 The free living fungus Trichoderma can be used for:
A Killing insects
B Biological control of plant diseases
C Controlling butterfly caterpillars
D Producing Antibiotics

Answer: Biological control of plant diseases
4 Which one of the following processes CO2 is not released?
A Alcoholic fermentation
B Lactate fermentation
C Aerobic respiration in plants
D Aerobic respiration in animals

Answer: Lactate fermentation
5 High value of B O D (Biochemical Oxygen Demand) shows
A water is normal
B water is highly polluted
C water is less polluted
D none of these

Answer: water is highly polluted
6 Which of the following is fermentation process?
A batch process
B continuous process
C both a and b
D none of these

Answer:both a and b
7 Who showed that Sacchaaromyces cerevisiae causes fermentation forming products such as beer and buttermilk?
A Louis Pasteur
B Alexander Fleming
C Selman Waksman
D Schatz

Answer:Louis Pasteur
8 Rennet is used in
A bread making
B fermentation
C cheese making
D antibiotics synthesis

Answer:cheese making
9 Tissue plasminogen activator is
A a vitamin
B an Enzyme
C a chemical that stimulates tissue differentiation
D amino acid

Answer: an Enzyme
10 A bioreactor is
A hybridoma
B Culture containing radioactive isotopes
C Culture for synthesis of new chemicals
D Fermentation tank

Answer:Fermentation tank
11 Humulin is
A carbohydrate
B protein
C fat
D antibiotics

Answer:protein
12 Which of the following can be application of fermentation?
A tanning of leather
B curing of tea
C production of vine
D all of these

Answer: all of these
13 Enzyme immobilisation is
A conversion of an active enzyme into inactive form
B providing enzyme with protective covering
C changing a soluble enzyme into insoluble state
D changing pH so that enzyme is not able to carry out its function

Answer: providing enzyme with protective covering
14 Biogas is produced by
A aeobic breakdown of biomass
B anaerobic break down of biomass
C with the help of methanogenic bacteria
D both b and c

Answer: both b and c
15 Name the first organic acid produced by microbial fermentation
A citric acid
B lactic acid
C acetic acid
D none of the above

Answer:lactic acid
16 The residue left after methane production from cattle dung is:
A Burnt
B Burried in landfills
C Used as manure
D Used in civil construction

Answer: Used in civil construction
17 Pencillin inhibits bacterial mulitiplication because it
A Checks RNA synthesis
B Checks DNA synthesis
C Destroys chromatin
D Inhibits cell wall formation

Answer: Inhibits cell wall formation
18 Biogas production from waste biomass with the help of methanogenic bacteria is:
A Onestep process
B Twostep process
C Threestep process
D Multistep process

Answer:Threestep process
19 Aquatic fern which is excellent biofertiliser:
A Azolla
B Salvinia
C Marsilea
D Pteridium

Answer: Azolla
20 Most famous bacterial fertilizer is:
A Nitrosomonas
B Nitrobacter
C Nitrosococcus
D Rhizobium

Answer: Rhizobium

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