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Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

 Identify the blank spaces A, B, C and D in the following table and select the correct answer. 

Type of microbe Scientific name Commercial product
Bacterium A Streptokinase
B Aspergillus niger Citric acid
Fungus Trichoderma polysporum C
Bacterium D Butyric acid

  1. A-Streptococcus, B-Fungus, C-Cyclosporin A, D-Clostridium butylicum

  2. A-Clostridium butylicum, B-Streptococcus, C-Fungus, D-Cyclosporin A

  3. A-Streptococcus, B-Yeast, C-Cydosporin A, Dlactobacillus

  4. A-Streptococcus, B-Cyclosporin A, C-Statins, D-Clostridium butylicum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Strepokinase is obtained from Streptococcus.
Aspergillus is a fungus.
Tricoderma produces cyclosporin A
Butyric acid is obtained from Clostridium butylicum.
So, the correct answer is ' A-Streptococcus, B-Fungus, c-Cyclosporin A, D- Clostridium butylicum.'
Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Match different organisms in column I with their uses in column II and select the correct answer from the given codes.

Column I Column II
A. Lactobacillus acidophifus (i) Formation of dough
B. Saccharomyces cerevisiae (ii) Single cell proteins
C. Propionibacterium shannanii (iii) Conversion of milk into curd
D. Spirulina (iv) Formation of Swiss cheese 
  1. $A-(iii), B-(i), C-(ii), D-(iv) $
  2. $A-(iii), B-(i), C-(iv), D-(ii) $
  3. $A-(i), B-(iii), C-(iv), D-(ii)$
  4. $A-(i), B-(iii), C-(ii), D-(iv) $
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Lactobacillus acidophilus convert milk into curd.
Swiss cheese is made with the help of Propionibacterium shermanii .
Saccharomyces cerevisiae helps in the formation of dough.
Spirulina is used as Singla cell protein.
So, the correct option is 'A-(iii), B-(I), C-(iv), D-(ii)'
Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Select the correct option to fill up the blanks.
(i) _______ are used in detergent formulations and are helpful in removing oily stains from the laundry.
(ii) _______ are ripened by growing Penicillium roqueforti on them.
(iii) ______ are produced without distillation whereas,   are produced by distillation of the fermented broth.
(iv) ______ antibiotic was used to treat American soldiers wounded in world war II.
(v) _______ is also called as kusht rog. 

  1. (i) Lipases, (ii) Camembert cheese, (iii) Whisky and rum, wine and beer, (iv) Penicillin, (v) Leprosy

  2. (I) Lipases, (ii) Roquefort cheese, (iii) Wine and beer, whisky and rum, (iv) Penicillin, (v) Leprosy

  3. (i) Streptokinases, (ii) Roquefort cheese, (iii) Wine and beer, whisky and rum, (iv) Streptomycin, (v) Whooping cough

  4. (i) Amylases, (ii) Swiss cheese, (iii) Whisky and rum, wine and beer, (iv) Penicillin, (v) Diphtheria
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Lipases are used in detergent formulations and are helpful in removing oily stains from the laundry. Roquefort  are ripened by growing Penicillium roqueforti on them. Wine and beer are produced without distillation whereas, whisky and rum  are produced by distillation of the fermented broth.  Penicillin antibiotic was used to treat American soldiers wounded in world war II.  Leprosy is also called as kusht rog. 
So, the correct option is '(i) lipases, (ii)Roquefort cheese, (iii)Wine and beer, whisky and rum, (iv) Penicillin, (v)Leprosy'
Multiple choice zoology introduction to microbiology commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products food production and microorganisms

Statement 1 : Besides curdling of milk, LAB also improve its nutritional quality by increasing vitamin $B _{12}$.
Statement 2 : LAB, when present in human stomach, check disease causing microbes. 

  1. Both statements 1 and 2 are correct.

  2. Statement 1 is correct but statement 2 is incorrect.

  3. Statement 1 is incorrect but statement 2 is correct.

  4. Both statements 1 and 2 are incorrect.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
LAB improve its nutritional quality by increasing vitamin B$ _12$ besides curdling the milk.
LAB produce myriad beneficial effects for human beings include, alleviation of lactose intolerance, diarrhoea, peptic ulcer, stimulation of immune system, antiallergic effects, antifungal actions and prevention of colon cancer.
So, the correct option is 'Both statements 1 and 2 are correct'
Multiple choice zoology micro - organisms: a wonderful world commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

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

  1. A and C

  2. C and D

  3. A, B and C

  4. B, C and D
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.

Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

Microorganisms involved in curd formation is

  1. Rhizopus

  2. Lactobacillus

  3. Smut

  4. Rust
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lactobacillus belongs to the group of bacteria which perform fermentation and convert the sugars into lactic acid in the absence of oxygen. This bacterium is present in the raw milk. This bacterium can also be added to the milk in the form of already synthesized curd. Lactose is the disaccharide sugar present in the milk gets converted to lactic acid. The lactic acid which is produced gives a sour taste and the milk is converted to curd. 

Thus, the correct answer is option B. 

Multiple choice zoology microbes in human welfare commercial use of microorganism microbes in household and industry microbial products - food, medicines and industrial products

The heat treatment that destroys harmful bacteria and also causes little nutrient damage is

  1. freeze drying

  2. pasteurisation

  3. drying

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is one of the examples of physical methods to cause food preservation and is called pasteurization.

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

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

  1. Pasteurisation

  2. Fermentation

  3. Vaccination

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
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.