Tag: biology

Questions Related to biology

Which of the following is wrongly matched?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Detergents- lipase

  2. Alcohol- nitrogenase

  3. Textile- amylase

  4. Fruit juice- pectinase

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Correct Option: B
Explanation:

Zymase from yeasts are used in the production of alcohol.

Correct answer-B

Which among these are produced by distillation of fermented broth?
(a) Whisky
(b) Wine
(c) Beer
(d) Rum
(e) Brandy.

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. b and c alone

  2. a and b alone

  3. a, d and e alone

  4. c and d alone

  5. a, c and d alone

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Correct Option: C
Explanation:

Wine and beer are produced without distillation,whereas whisky, brandy and rum are produced with distillation.

Correct answer-C

Which one of the following pairs is wrongly matched ?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Textile amylase

  2. Detergents lipase

  3. Alcohol nitrogenase

  4. Fruit juice pectinase

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Correct Option: C

Certain yeast mutants have petite mitochondria, and they obviously lack _____________________.

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Ability to generate alcohol from glucose

  2. Capacity to synthesize fats

  3. Ability to form ATP by oxidative phosporylation

  4. Enzyme which phosphorylates glucose

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Correct Option: A

The following change is observed due to the addition of hops in the beer during fermentation

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Colour

  2. Flavour

  3. Mild antibacterial activity

  4. All of the above

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Correct Option: D

Isinglass is used for :

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Production of insulin

  2. Feeding cattle, Pig and Poultry

  3. Preparation of paints and varnishes

  4. Clearing of vinegar, wines and beer

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Correct Option: D

Which one of the following is a secondary metabolite?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Ribulose

  2. Glycerol

  3. Metabolic acid

  4. Cholesterol

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Correct Option: A

The citric acid cycle _________________.

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Contains intermediates for amino acid synthesis

  2. Generates fewer molecules of ATP than glycolysis

  3. Is an anaerobic process

  4. Is the major anabolic pathway for glucose synthesis

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Correct Option: A
Study the given statements and select the correct option.
i.Carbohydrates, proteins, nucleic acids and lipids are primary metabolites.
ii.Alkaloids, flavonoids, rubber, etc., are secondary metabolites.
iii.Linoleic, linolenic and palmitic acids are the three essential fatty acids.
microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Statements (i)and(ii) are correct

  2. Statements (i)and(iii) are incorrect

  3. Statements (i)and(iii) are correct

  4. Only statement (ii)is incorrect

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Correct Option: A
Explanation:

Primary metabolites are the substances that are involved in the basic metabolic processes, this includes the proteins and carbohydrates and lipids. Plant cells have different molecules other than the primary metabolite and these are considered as secondary metabolite which is not directly involved in the metabolism.

These are considered as a waste product for the plant cell this includes alkaloids, terpenoids, pigments, essential oils.
Fatty acids are obtained by the hydrolysis of fat. Linoleic acid, linolenic acid and arachnoid acid are essential fatty acids. 
Deficiency of essential fatty acid causes follicular hyperkeratosis disease.

So, the correct option is 'Statements (i)and(ii) are correct'

Which one of the following is not the correctly matched pair of a product and the micro-organism responsible for it?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Ethyl alcohol -Yeast

  2. Acetic acid - Lactobacillus

  3. Cheese -Nitrobacter

  4. Curd - Azotobacter

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Correct Option: A,B,C