Tag: biology

Questions Related to biology

Which of the following is wrongly matched?

  1. Detergents- lipase

  2. Alcohol- nitrogenase

  3. Textile- amylase

  4. Fruit juice- pectinase


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.

  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


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 ?

  1. Textile amylase

  2. Detergents lipase

  3. Alcohol nitrogenase

  4. Fruit juice pectinase


Correct Option: C

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

  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


Correct Option: A

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

  1. Colour

  2. Flavour

  3. Mild antibacterial activity

  4. All of the above


Correct Option: D

Isinglass is used for :

  1. Production of insulin

  2. Feeding cattle, Pig and Poultry

  3. Preparation of paints and varnishes

  4. Clearing of vinegar, wines and beer


Correct Option: D

Which one of the following is a secondary metabolite?

  1. Ribulose

  2. Glycerol

  3. Metabolic acid

  4. Cholesterol


Correct Option: A

The citric acid cycle _________________.

  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


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.
  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


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?

  1. Ethyl alcohol -Yeast

  2. Acetic acid - Lactobacillus

  3. Cheese -Nitrobacter

  4. Curd - Azotobacter


Correct Option: A,B,C