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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).
Explanation:
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B- yeast is used for baking things, it helps the dough rise in bread and pizzas etc
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D. It absorbs photons from the sun and gives energy to electrons.
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Enzymes are used in the food, agricultural, cosmetic, and pharmaceutical industries to control and speed up reactions in order to quickly and accurately obtain a valuable final product.
It consists of skin, hair, nails, and glands. The skin protects the body from the environment on the outside. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature. It also helps store fat and water.
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