Question

Assertion (A): Albumin is a globular protein. Reason (R): Polypeptide chain coils around to give a straight chain.

(a) Both (A) and (R) are true, and (R) is the correct explanation of (A).

(b) Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(c) (A) is true, but (R) is false.

(d) (A) is false, but (R) is true.

Answer 1

Albumin is a globular protein and its polypeptide chain folds to give a roughly spherical shape.

Step-by-step explanation:

Assertion (A) states that Albumin is a globular protein. This assertion is true. Albumin is indeed a globular protein. Globular proteins are folded proteins that have a roughly spherical shape and are soluble in aqueous media. Examples of globular proteins include egg albumin, serum albumin, hemoglobin, and myoglobin. These proteins play important roles in various biological processes.

Reason (R) states that the polypeptide chain coils around to give a straight chain. This reason is false. The polypeptide chain does not give a straight chain in globular proteins. Instead, the chains are folded in such a way that the entire molecule is roughly spherical. This folding allows the hydrophobic amino acids to be on the inside of the molecule, while the hydrophilic amino acids are on the surface. The folding of the polypeptide chain is what gives globular proteins their unique structure.

In summary, assertion (A) is true, while reason (R) is false. Albumin is a globular protein and the polypeptide chain in globular proteins folds to give a roughly spherical shape.