Tag: food production

Questions Related to food production

Caffeine, a constituent of tea and coffee is actually.

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

  1. A polyamine

  2. An oligosaccharide

  3. An alkaloid

  4. A lipoprotein

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Correct Option: A

The most thoroughly studied of the known bacteria-plant interactions is the :-

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

  1. Gall formation on certain angiosperms by Agrobacterium

  2. Nodulation of Sesbania stems by nitrogen fixing bacteria

  3. Plant growth stimulation by phosphate solubilising bacteria

  4. Cyanobacterial symbiosis with some aquatic ferns

Show answer
Correct Option: A
Explanation:
Agrobacterium tumefaciens is called a natural plant genetic engineer. Using Agrobacterium vector, nematode specific genes were introduced into the host plant. The introduction was as such that it produced both sense and anti-sense RNA in the host cells. These two RNA's being complementary to each other formed a double-stranded (ds-RNA) that initiated RNAi and thus, silenced the specific mRNA of the nematode. The Agrobacterium is most widely studied of the known bacteria-plant interactions.
So the correct answer is 'Option A'.

Commercial source of manufacture of cheese especially for giving flavour to it, its from _____________.

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

  1. Citrus fruit

  2. Aspergillus

  3. Penicillium

  4. Bacteria

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Correct Option: D

Which one of the following is a viral disease of chickens ?

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

  1. pullorum disease

  2. Ranikhet

  3. mycotic disease

  4. fowl spirochaetosis.

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Correct Option: B
Explanation:

Ranikhet disease, also known as new castle disease, is found in young birds. Its symptoms include sneezing, gasping and often  droopiness. The affected birds are depressed with ruffled feathers. Control of Ranikhet disease can be done by sanitary and vaccination measures.

Which is not a bacterial action?

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

  1. Nitrogen fixation

  2. Emulsification of fat

  3. Sewage disposal

  4. Ripening of cream

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Correct Option: B
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.'

Cellulose present in the food of grazing animals is

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

  1. Digested by intestinal bacteria

  2. Digested by animal itself

  3. Digested partly by the animal and party by bacteria

  4. Passed out undigested

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Correct Option: A
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.'

Which of the following is non pathogenic bacteria of colon?

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

  1. E. coli

  2. Balantidium coli

  3. Entamoeba coli

  4. Enterbius vermicularis

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Correct Option: A
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'.

Which is wrongly matched 

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

  1. Clostridium butylicum - Lactic acid

  2. Aspergillus hiner - Citric acid

  3. Yeast - Statins

  4. Acetobacter aceti - Acetic acid

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Correct Option: A
Explanation:

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

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