What is an example of globular protein?
(A) Insulin
(B) Keratin
(C) Albumin
(D) Myosin
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) and (C) only
Proteins are classified into two main structural types based on their molecular shape: Globular and Fibrous.
1. Globular Proteins
Globular proteins are formed when the chains of polypeptides coil around to give a spherical (globe-like) shape. They are usually soluble in water.
- (A) Insulin: A hormone that regulates blood sugar. It is a classic example of a globular protein.
- (C) Albumin: Found in egg whites and blood plasma. It is highly soluble in water and is a globular protein.
2. Fibrous Proteins
Fibrous proteins consist of linear, thread-like molecules that lie side by side to form fibers. They are insoluble in water.
- (B) Keratin: Found in hair, wool, and silk. It is a fibrous protein.
- (D) Myosin: Found in muscles. It is also a fibrous protein.