Atomos Test Generator Free PYQs ExamsMy practice Log in / Sign up free

Biomolecules (Biology)

NEET (UG) 2026MCQEasy📈 Topic in 62% papers+4−1
Ques. 1NEET (UG) 2026

The following reaction depicts the activity of a particular class of enzymes : [figure] Identify the enzyme class 'E' from the following options :

  1. Isomerases
  2. Ligases
  3. Transferases
  4. Lyases

Answer

(4) Lyases

Solution

The groups X and Y are removed from the substrate without hydrolysis, and a double bond (C = C) is left behind.

Enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis, forming double bonds, are lyases.

Answer: (4)

Keep practising — Biomolecules (Biology)

Ques. 2RE-NEET (UG) 2026

Match List-I with List-II.

  1. A-I, B-II, C-III, D-IV
  2. A-I, B-II, C-IV, D-III
  3. A-II, B-I, C-IV, D-III
  4. A-II, B-I, C-III, D-IV
Ques. 3RE-NEET (UG) 2026

Arrange the following elements in descending order of their contribution to percentage weight of the human body.

  1. B, A, C, D
  2. A, B, C, D
  3. C, A, B, D
  4. B, C, D, A
Ques. 4NEET (UG) 2025

The protein portion of an enzyme is called:

  1. Apoenzyme
  2. Prosthetic group
  3. Cofactor
  4. Coenzyme
Ques. 5NEET (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. 6NEET (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. 7NEET (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. 8NEET (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. 9NEET (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. 10NEET (UG) 2024

The cofactor of the enzyme carboxypeptidase is:

  1. Zinc
  2. Niacin
  3. Flavin
  4. Haem
Ques. 11NEET (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

All Biomolecules (Biology) PYQs →

PDFDownload Biomolecules (Biology) PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters