Tag: uses of microorganisms

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Questions Related to uses of microorganisms

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which is not a bacterial action?

  1. Nitrogen fixation

  2. Emulsification of fat

  3. Sewage disposal

  4. Ripening of cream
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Nitrogen fixation is a process by which atmospheric nitrogen is converted into ammonium compounds and made available for plants. Examples include Rhizobium, Azotobacter.
  • Many bacteria are also involved in the sewage disposal process. Mostly saprophytic aerobic bacteria are used in treatment plants.
  • During the process of ripening of cream, Lactic acid bacteria are used. These bacteria convert lactose into acid and results in the curdling of cream.
Thus, the correct answer is 'Emulsification of fat.'

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Cellulose present in the food of grazing animals is

  1. Digested by intestinal bacteria

  2. Digested by animal itself

  3. Digested partly by the animal and party by bacteria

  4. Passed out undigested
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Grazing is a method of feeding in which an animal feeds on plants such as grasses. The animals are called grazing animals. They are also called as Ruminants. Examples include cattle, sheep, goats, deer. They are capable of digesting cellulose present in the plants. The cellulose is digested by intestinal bacteria present in them. These bacteria possess the necessary enzymes to digest cellulose in the GI tract.

Thus, the correct answer is 'Digested by intestinal bacteria.'

Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which of the following is non pathogenic bacteria of colon?

  1. E. coli

  2. Balantidium coli

  3. Entamoeba coli

  4. Enterbius vermicularis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Escherichia coli, also known as E. coli, is a Gram-negative, facultatively anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms.
  • Escherichia coli (E. coli) bacteria normally live in the intestines(colon) of Humans and animals.
  • E.coli  is nonpathogenic bacteria of the colon because it is present in the colon but do not cause any disease.
  • So, the correct answer is 'E.coli'.
Multiple choice biology food production food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which is wrongly matched 

  1. Clostridium butylicum - Lactic acid

  2. Aspergillus hiner - Citric acid

  3. Yeast - Statins

  4. Acetobacter aceti - Acetic acid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Clostridium butylicum is used to produce butyric acid. Lactic acid is produced by Acetobacter.

So, the correct option is 'Clostridium butylicum - Lactic acid'