Question

MCQ,1)
is a protein in bones is produced from amino acids.
a) Myosin
b) Melanin
b) Ossein
d) Trypsin​

Answer 1

d) Trypsin​  

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Answer 2

Answer:

Option c) Ossein

Explanation:

• Myosin is the protein found in muscle cells that produces dense contractile filaments.

Thus option a) is incorrect.

• Melanin is the skin protein produced after the digestion of proteins.

Thus option b) is incorrect.

• Trypsin is a digestive enzyme that digests protein secreted by the pancreas as trypsinogen.

Thus option d) is incorrect.

• Bone forms the major part of the vertebrate endoskeleton. It is hard, highly calcified, rigid connective tissue. The matrix is dense and hard. About 70% of its dry weight of it is formed from inorganic salts such as calcium phosphate and calcium carbonate and traces of calcium fluoride and magnesium chloride.

• And remaining 30% is formed by a protein called ossein. These bone cells are called osteocytes. Ossein is the protein in bones produced from amino acids after the digestion of proteins.

Thus option c) is correct.

Hence option c) Ossein is the correct answer.