Keratin is a fibrous protein found in human hair and nails. What is a primary physical characteristic of fibrous proteins according to the PTB?
Q1. Keratin is a fibrous protein found in human hair and nails. What is a primary physical characteristic of fibrous proteins according to the PTB?
Answer: Insolubility in aqueous media
Explanation: Fibrous proteins like keratin and silk are characterized by being insoluble in water and having a secondary structure as their highest level.