Read the following statements.
a) Oxygen constitute 65% of weight of human body.
b) Silicon is present in negligible amount in earth’s crust
c) Molecular weight of micromolecules found in acid soluble pool ranges from 18 to 800 Daltons.
d) Lysine and arginine are basic amino acids.
e) Essential amino acids can be synthesized in human body.
f) In amino acids ${NH}_{2}$ and COOH have ionisable nature.
How many statements are correct?

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Six

Five

Four

Three

answer is C.

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Detailed Solution

Percentage of silicon in earth crust is 27.7 %. Silicon is present in negligible amount in human body. Amino acids that are synthesized within the human body are called non-essential amino acids. Amino acids that are obtained through diet are called as essential amino acids. Essential amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

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