Question

Which one of the following is a bodybuilding material?
A. Protein
B. Sugar
C. Mineral salts
D. Fat

Answer 1

Hint: In all living organisms some chemical substances are found that are called biomolecules. There are many compounds and some minerals which are required essentially to our body. These are the components of a cell and the cell is the structural unit of all organisms.

Complete answer: Sugars are known as carbohydrates. These are used as energy sources in our body. By oxidation of sugar, we get energy. Fat is also used for energy production. Mineral and salts are required for bones and many metals are found as components of enzymes.
-Protein has an important role as it forms the structure of our body. That’s why these are called the building blocks of our body.
-Our muscles are made by protein- myosin, and actin. Collagen protein is found in bones and tendons. Keratin protein is found in nails, feathers in birds, hairs, and skin. Elastin protein is found in blood vessels. So protein forms most of the part of the body.
-All enzymes and some hormones that regulate our metabolic reactions and activities are made by proteins.
-Haemoglobin and myoglobin proteins are chromo proteins that are found in blood and muscles.
Hence, the correct answer is option A.

Note: Proteins are made by amino acids. On the basis of the type of amino acid, the chemical nature of protein is determined. Protein can be acidic, basic, or neutral. An amino acid contains the carboxyl group as an acidic group and the amino group as a basic group. Protein is also found in cell membranes in the form of lipoprotein.