Q. Percentage composition of fibroin and sericin in silk is
A) 50 : 40
B) 80 : 20
C) 30 : 70
D) 40 : 60
Explanation
Silk is composed of proteins. It consists of an inner part made up of fibroin protein and is covered with an outer envelope made up of sericerin protein. The silk thread contains 75-80% fibroin and 20-25% of sericin.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.