Question

Number of essential amino acids in the human is
A. 14
B. 10
C. 9
D. 6

Answer 1

Proteins which contain the all nine amino acid essential proteins that are necessary for sustaining life are called Proteins. An amino acid is bi functional organic molecules that contain both amino groups and carboxyl groups. Amino acids are the body building block of the protein and total 300 amino acids that occurred in nature and 22 are known as the standard amino acids that are commonly found in the protein.
There are a total 9 amino acids that are made by the body. Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine are the nine essential amino acids that present in the human body. The smallest quantity present in the foodstuff of essential amino acids.

Complete answer:
Histidine influences several metabolic reactions in the body and helps to obtain the proteins. And transferred messages from the brain to various parts of the body. Tryptophan plays a vital role in the precursor for serotonin or melatonin provided to the body. Lysine is used for preventing the herpes in the human body. Methionine is used for the supplies Sulphur and other essential components that are required by the body for normal growth and metabolism and also called lipotropic that helps the fat process in the liver.
For the muscles, tissue repair and maintenance of proper nitrogen balance in the body valine is a most important source for these components. And present in the muscles tissues with high concentration. And leucine is a branched chain essential amino acid that helps to stimulate the muscles protein and play a vital role in the major fuel involved in the tissue building reactions. Isoleucine is important for blood sugar regulations and hemoglobin, muscles development and maintaining the energy regulation of the body. Antibody production obtained with the help of threonine. And phenylalanine is the catecholamine known as the family hormones of the body.

Hence, the correct answer is option (C).

Note: There are a total 9 amino acids that are made by the body. Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine are the nine essential amino acids that present in the human body. The smallest quantity present in the foodstuff of essential amino acids.