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Biomolecules (Biology)

NEET (UG) 2025MCQEasy📈 Topic in 62% papers+4−1
Ques. 1NEET (UG) 2025

The protein portion of an enzyme is called:

  1. Apoenzyme
  2. Prosthetic group
  3. Cofactor
  4. Coenzyme

Answer

(1) Apoenzyme

Solution

A holoenzyme consists of a protein part and a non-protein part (cofactor).

The protein portion of the enzyme is called the apoenzyme.

Prosthetic groups, coenzymes and metal ions are the non-protein cofactors.

Answer: (1)

Keep practising — Biomolecules (Biology)

Ques. 2NEET (UG) 2025

Match List-I with List-II Choose the option with all correct matches.

  1. A-III, B-II, C-I, D-IV
  2. A-II, B-III, C-I, D-IV
  3. A-III, B-IV, C-II, D-I
  4. A-III, B-II, C-IV, D-I
Ques. 3NEET (UG) 2025

Which one of the following statements refers to Reductionist Biology?

  1. Chemical approach to study and understand living organisms
  2. Behavioural approach to study and understand living organisms
  3. Physico-chemical approach to study and understand living organisms
  4. Physiological approach to study and understand living organisms
Ques. 4NEET (UG) 2025

Which one of the following enzymes contains 'Haem' as the prosthetic group?

  1. Succinate dehydrogenase
  2. Catalase
  3. RuBisCO
  4. Carbonic anhydrase
Ques. 5NEET (UG) 2025

Name the class of enzyme that usually catalyses the following reaction : S - G + S' S + S' - G Where, G a group other than hydrogen S a substrate S' another substrate

  1. Transferase
  2. Ligase
  3. Hydrolase
  4. Lyase
Ques. 6NEET (UG) 2024

Lecithin, a small molecular weight organic compound found in living tissues, is an example of:

  1. Amino acids
  2. Phospholipids
  3. Glycerides
  4. Carbohydrates
Ques. 7NEET (UG) 2024

The cofactor of the enzyme carboxypeptidase is:

  1. Zinc
  2. Niacin
  3. Flavin
  4. Haem
Ques. 8NEET (UG) 2024

Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

  1. Cofactor inhibition
  2. Feedback inhibition
  3. Competitive inhibition
  4. Enzyme activation
Ques. 9NEET (UG) 2024

Match List I with List II Choose the correct answer from the options given below.

  1. A-IV, B-I, C-II, D-III
  2. A-I, B-II, C-III, D-IV
  3. A-II, B-III, C-IV, D-I
  4. A-III, B-IV, C-I, D-II
Ques. 10NEET (UG) 2024

Match List I with List II: Choose the correct answer from the options given below :

  1. A-IV, B-II, C-III, D-I
  2. A-III, B-II, C-I, D-IV
  3. A-II, B-IV, C-I, D-III
  4. A-IV, B-I, C-III, D-II
Ques. 11NEET (UG) 2024

Regarding catalytic cycle of an enzyme action, select the correct sequential steps : Choose the correct answer from the options given below :

  1. E, A, D, C, B
  2. A, E, B, D, C
  3. B, A, C, D, E
  4. E, D, C, B, A

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