JEE Main 2025 (Online) 2nd April Evening Shift | Biomolecules Question 8 | Chemistry

A tetrapeptide, " $x$ " on complete hydrolysis produced glycine (Gly), alanine (Ala), valine (Val), leucine (Leu) in equimolar proportion each. The number of tetrapeptides (sequences) possible involving each of these amino acids is :

JEE Main 2025 (Online) 2nd April Morning Shift

MCQ (Single Correct Answer)

-1

Identify the correct statement among the following :

All naturally occurring amino acids except glycine contain one chiral centre.

Amino acid, cysteine can easily undergo dimerisation due to the presence of free SH group.

Glutamic acid is the only amino acid that contains a $-$COOH group at the side chain.

All naturally occurring amino acids are optically active.

JEE Main 2025 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

-1

Identify the essential amino acids from below:

(A) Valine

(B) Proline

(D) Threonine

(E) Tyrosine

Choose the correct answer from the options given below:

(A), (C) and (D) only

(C), (D) and (E) only

(A), (C) and (E) only

(B), (C) and (E) only

JEE Main 2025 (Online) 29th January Morning Shift

MCQ (Single Correct Answer)

-1

Match List - I with List - II.

List - I (Carbohydrate)	List - II (Linkage Source)
(A) Amylose	(I) $\beta$ - $C_1 - C_4$, plant
(B) Cellulose	(II) $\alpha$ - $C_1 - C_4$, animal
(C) Glycogen	(III) $\alpha$ - $C_1 - C_4$, $\alpha$ - $C_1 - C_6$, plant
(D) Amylopectin	(IV) $\alpha$ - $C_1 - C_4$, plant