Question

Proteins are composed of:
a.) Amino acids
b.) Carbohydrates
c.) Vitamins
d.) Mineral salts

Answer 1

Proteins are organic molecules and they are one of the major structural components of the cells and they are also responsible for the growth and repair of body tissue.

Complete step by step answer:
Proteins are one of the essential nutrients for the human body, they are the building blocks of our tissues. Proteins are made up of amino acids. Amino acids are organic molecules which are small in size and they consist of aloha carbon atoms linked to the amino group, or a carboxylic group or hydrogen atom or it can be any variable component of the side chain.
The amino acids join together by peptide bond to form a long chain of protein. If the amino acids are joined together in a linear structure it is known as the primary structure of protein.
If there is a presence of hydrogen bond it leads to the folding of the protein chain forming the secondary structure of protein. If there is presence of one polypeptide chain it leads to the formation of tertiary structure of protein and in the presence of multiple polypeptide chain formation of quaternary structure of protein takes place.

Carbohydrates are the most important source of energy for humans and many other organisms and minerals are also the food components which are involved in the functioning of the body.

So, the correct answer is “Option A”.

Note: All the mentioned options i.e. carbohydrates, minerals, vitamins and proteins are very important in a diet. A proper balanced diet contains sufficient amounts of each one of them for proper functioning of the body.