Question

17. Silk contains a protein known as
a) casein
(b) fibroin
(c) sericin
(d) both b and c

Answer 1

Answer:

1. Fibroin is the protein present in silk.

2. Fibroin is an insoluble protein present in silk produced by numerous insects, such as the larvae of Bombyx mori, and other moth genera such as Antheraea, Curricula, Samia, and Gonometa.

3. Silk fibroin is a fibrous protein with a semi-crystalline structure that provides stiffness and strength. Sericin is a glue-like amorphous protein that acts as an adhesive binder to keep the structural integrity of the fibers.

4. Sericin is soluble and can be removed by a thermochemical process known as degumming.

Answer 2

From the given question the correct answer is:

Fibroin

• The protein present in silk is called Fibroin.

• Silk fibroin is a fibrous protein with a semi-crystalline structure that provides stiffness and strength.
•  Sericin is a glue-like amorphous protein that acts as an adhesive binder to keep the structural integrity of the fibers.

• Sericin is soluble and can be removed by a thermochemical process known as degumming.

• Fibroin is an insoluble protein present in silk produced by numerous insects, such as the larvae of Bombyx mori, and other moth genera such as Antheraea, Curricula, Samia, and Gonometa.