BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Essential amino acids cannot be made by the body. As a result, they must come from food. The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

Detailed explanation-2: -These are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. Although your body can make nonessential amino acids, it cannot make essential amino acids, so you have to get them from your diet.

Detailed explanation-3: -The human body uses just 21 amino acids to make all the proteins it needs to function and grow. Because amino acids can be arranged in many different combinations, it’s possible for your body to make thousands of different kinds of proteins from just the same 21 amino acids.

Detailed explanation-4: -In the human body, there are 20 amino acids that function as building blocks of proteins. Nine of these amino acids are considered essential-they must be consumed in the diet-while five are considered nonessential in that they can be made by the human body.