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Biomolecules

JEE Main 2025 (Online) 29th January Morning ShiftMatchingEasy📈 Topic in 5% papers+4−1
Ques. 1JEE Main 2025, 29 January (Morning Shift)

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

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

Answer

(4) (A)-(IV), (B)-(I), (C)-(II), (D)-(III)

Solution

(A) Amylose: unbranched chain of α-D-glucose units joined by -C1 - C4 glycosidic linkages; a component of starch (plant) (IV)

(B) Cellulose: unbranched chain of β-D-glucose units joined by -C1 - C4 glycosidic linkages; plant cell walls (I)

(C) Glycogen: the storage polysaccharide of animals (animal starch), built on -C1 - C4 chains (with -C1 - C6 branch points, more highly branched than amylopectin) (II), the only animal source

(D) Amylopectin: branched chain of α-D-glucose; -C1 - C4 in the chain and -C1 - C6 at the branches; component of starch (plant) (III)

(A)-(IV), (B)-(I), (C)-(II), (D)-(III)

Answer: (4)

Keep practising — Biomolecules

Ques. 2JEE Main 2025, 29 January (Evening Shift)

Identify the essential amino acids from below: Choose the correct answer from the options given below:

  1. (A), (C) and (D) only
  2. (C), (D) and (E) only
  3. (A), (C) and (E) only
  4. (B), (C) and (E) only
Ques. 3JEE Main 2025, 28 January (Morning Shift)

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below

  1. Statement I is true but Statement II is false
  2. Both Statement I and Statement II are true
  3. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are false
Ques. 4JEE Main 2025, 28 January (Evening Shift)

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

  1. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
  2. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
  3. (A)-(II), (B)-(IV), (C)-(III), (D)-(I)
  4. (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
Ques. 5JEE Main 2025, 28 January (Evening Shift)

Identify correct conversion during acidic hydrolysis from the following : Choose the correct answer from the options given below :

  1. (A), (B) and (C) only
  2. (B), (C) and (D) only
  3. (B), (C) and (E) only
  4. (C), (D) and (E) only
Ques. 6JEE Main 2025, 24 January (Morning Shift)

The carbohydrate "Ribose" present in DNA, is Choose the correct answer from the options given below:

  1. A, D and E Only
  2. B, D and E Only
  3. A, C and D Only
  4. A, B and E Only
Ques. 7JEE Main 2025, 24 January (Evening Shift)

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

  1. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
  2. (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
  3. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
  4. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
Ques. 8JEE Main 2025, 23 January (Morning Shift)

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below

  1. Statement I is true but Statement II is false
  2. Statement I is false but Statement II is true
  3. Both Statement I and Statement II are true
  4. Both Statement I and Statement II are false
Ques. 9JEE Main 2025, 23 January (Evening Shift)

The -Helix and - Pleated sheet structures of protein are associated with its :

  1. tertiary structure
  2. quaternary structure
  3. primary structure
  4. secondary structure
Ques. 10JEE Main 2025, 22 January (Morning Shift)

Which of the following acids is a vitamin ?

  1. Saccharic acid
  2. Ascorbic acid
  3. Aspartic acid
  4. Adipic acid
Ques. 11JEE Main 2025, 22 January (Evening Shift)

Identify the number of structure/s from the following which can be correlated to D-glyceraldehyde. [figure]

  1. three
  2. two
  3. one
  4. four

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