Question

Scleroproteins are
A)Glycoproteins
B)Keratins
C)Collagens
D)Both B and C

Answer 1

Hint The first one is found in a large amount in the human body mostly in the bones, muscles, skins, and tendons, and holds the body together. The second one is the protein present mainly in the hair, skin, and nails. It can also be found in the internal organs and glands

Complete answer
Scleroproteins - it is fibrous proteins that mainly provide protective and structural support in connective tissue.
-One of the most essential biomolecules RD proteins that serve as structural materials as enzymes, transporters, antibodies as well as gene expression regulators.
-Proteins are made up of polymers and are composed of several amino acids and can be classified depending on its form and main functions i.e. Sphero Proteins are the globular proteins like most of the enzymes, Scleroproteins are the fibrous proteins that provide structural supports, and the last one is the membrane proteins that act as a receptor of channels for polar or charged molecules.
-A long protein filaments that serve as structural proteins are Scleroproteins. These are generally water-insoluble and form waterproof protective barriers like keratin which is a constituent of hair, nails, skin, feathers, hooves, horns, etc.
-Scleroproteins also occur as collagen, elastin, and fibroin.
-A group of proteins found in the silk of certain arthropods like arachnids and insects is fibroin.
-Scleroproteins are present in the connective tissue, Tendons, bones matrices, and muscle fibers

Additional information
-A fibrous proteins i.e Scleroproteins once thought to be reliable but not known to be dissolved by dilute solutions of acids like citric and acetic.
Glycoproteins - in the immune system they are involved where they allow white blood cells to move around the body and trigger the immune responses and identify the other cells.
-It also helps in creating the mucus so that various organs in our body can be protected. Hence, they are essential for keeping our bodies healthy and functional.

So, the correct answer is, “Both B and C”.

Note:
-Elongated or fibrous polypeptide chains that form filamentous and sheet-like structures are known as Scleroproteins. These are different from the globular proteins by its low solubility in water.
-Scleroproteins provide protection and structural role by forming the connective tissue, tendons, bone matrices, and muscle fiber.
-A long protein filaments are formed by a scleroprotein which is shaped like rods or wires.