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D.RAJ

· started a discussion

· 1 Months ago

description (Question: 185953.0 )

Keratin : found in nails (consists of sulfur and is fibrous protein)

Question:
The protein present in silk fibre is –
Options:
A) Casein
B) Keratin
C) Elastin
D) Fibroin
Solution:

Ans:(d) The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).

sandhu

· commented

· 1 Months ago

also found in hair

Talented Boy

· commented

· 1 Months ago

Thanks

D.RAJ

· commented

· 1 Months ago

elastin : protein found in collagen (used in creams to make skin smooth and less wrinkled)

D.RAJ

· commented

· 1 Months ago

casein : protein found in milk (mostly taken by bodybuilders at night for its slow releasing nature)
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