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Biomolecules (Biology)

NEET (UG) 2026MCQEasy📈 Topic in 88% papers+4−1
Ques. 1NEET (UG) 2026

Which of the following statements are correct regarding amino acids ? Choose the correct answer from the options given below :

  1. A and B only
  2. C and D only
  3. B and C only
  4. A and C only

Answer

(4) A and C only

Solution

A ⇒ as per NCERT, amino acids have an amino group and an acidic group as substituents on the same carbon (α-carbon); hence they are substituted methanes ⇒ correct

B ⇒ serine has an –OH group in its R group; it is not aromatic (aromatic amino acids are tyrosine, phenylalanine and tryptophan) ⇒ incorrect

C ⇒ valine is a neutral amino acid ⇒ correct

D ⇒ lysine is a basic amino acid (glutamic acid is acidic) ⇒ incorrect

∴ A and C only

Answer: (4)

Keep practising — Biomolecules (Biology)

Ques. 2NEET (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
Ques. 3RE-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. 4RE-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. 5NEET (UG) 2025

The protein portion of an enzyme is called:

  1. Apoenzyme
  2. Prosthetic group
  3. Cofactor
  4. Coenzyme
Ques. 6NEET (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. 7NEET (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. 8NEET (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. 9NEET (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. 10NEET (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. 11NEET (UG) 2024

The cofactor of the enzyme carboxypeptidase is:

  1. Zinc
  2. Niacin
  3. Flavin
  4. Haem

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