A) 50:40
B) 80:20
C) 30:70
D) 40:60
Correct Answer: B
Solution :
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.You need to login to perform this action.
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