A researcher compares two proteins: one is spherical and soluble in water, while the other is thread-like and insoluble. Identify the insoluble protein.
Q1. A researcher compares two proteins: one is spherical and soluble in water, while the other is thread-like and insoluble. Identify the insoluble protein.
Answer: Keratin
Explanation: Fibrous proteins like keratin are insoluble and structural, while globular proteins like insulin are soluble and functional in aqueous media.