Tag: micro - organisms: a wonderful world

Questions Related to micro - organisms: a wonderful world

Which of the following food items is produced by the fermenting activity of microbes? 
A. Milk
B. Dosa 
C. Toddy
D. Cheese 

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. A and C

  2. C and D

  3. A, B and C

  4. B, C and D

Show answer
Correct Option: D
Explanation:

Cheese is one of the oldest milk products prepared with the help of microbes.The curd is separated from liquid part or whey to form cheese. Dosa, Upma are fermented preparation of rice and black gram. The two are allowed to ferment for 3-12 hours with air borne Leuconostoc and Streptococcus species of bacteria. Toddy is a traditional drink of some parts of South India which is made by fermentation of sap of palms.

So, the correct answer is 'B, C and D'.

What is the process called due to which idli and dosa makes it fluffy and soft?

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Pasteurisation

  2. Fermentation

  3. Vaccination

  4. None

Show answer
Correct Option: B
Explanation:

Saccharomyces cerevisiae is the fungus which is commonly known as baker's yeast. The yeast cells are added to the batter of idli and dosa. The fungus performs anaerobic fermentation. The fungus utilizes the fermentable sugars and convert them to ethanol and carbon dioxide. The carbon dioxide gas causes the dough to rise and become soft and fluffy. The carbon dioxide bubbles gets trapped in the dough and when baking is done, this bubbles break and forms pores. 

Thus, the correct answer is option B. 

Dosa and Idli are preparations of

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Wheat flour

  2. Rice

  3. Rice and Black gram

  4. Wheat and Black Gram

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Correct Option: C

Sausages are fermented

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Vegetables

  2. Meats

  3. Milk

  4. Sauce

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Correct Option: B

Processed cheese is

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Soft cheese

  2. Blended cheese

  3. Ripe cheese

  4. Hard cheese

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Correct Option: B

Yoghurt is produced with the help of

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Lactobacillus bulgaricus

  2. Lactobacillus thermophilus

  3. Streptococcus thermophilus

  4. Both A and C

Show answer
Correct Option: D
Explanation:

We use microbes or products derived from them everyday. There are various microbes that help us produces so many dairy products. For eg. Yoghurt is produced  commercially with the help of  Lactobacillus bulgaricus and  Streptococcus thermophilus

So, the correct answer is 'Both A and C'

Lactobacillus mediated change of milk to curd occurs due to.

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Coagulation and partial digestion of milk fats

  2. Coagulation and partial digestion of milk proteins

  3. Coagulation of milk proteins and complete digestion of milk fats

  4. Coagulation of milk fats and complete digestion of proteins

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Correct Option: B
Explanation:

Lactobacillus helps in curd formation by coagulating and partially digesting the milk proteins.

Correct answer-B

Lactic acid bacteria convert milk into curd and improves its nutritional quality by enhancing vitamin

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. A

  2. B

  3. C

  4. D

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Correct Option: B

Curd is rich in

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Calcium

  2. Vitamin ${ B } _{ 12 }$

  3. Phosphorus

  4. All of the above

Show answer
Correct Option: D
Explanation:
  • Curdling of milk produces curd which occurs due to the presence of Lactobacillus bacteria which convert milk sugar to lactic acid at high temperatures.
  • Curd is rich in minerals like calcium, phasphorus potassium and zinc.
  • They are also rich in protein.
  • They are a good source of vitamins like riboflavin, Vitamin B6, Vitamin B12, pantothenic acid, and Vitamin A. 
  • So, the correct answer is 'Calcium'.

The flour of Idli and Dosa is made by the use of which microbe?

zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

  1. Bacteria

  2. Lactobacillus

  3. Virus

  4. Yeast

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Correct Option: B