LIFE SCIENCE

Detailed explanation-1: -Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. There are 20 different types of amino acids that can be combined to make a protein.

Detailed explanation-2: -What Are Proteins Made Of? The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain (see below).

Detailed explanation-3: -A protein molecule is made from a long chain of these amino acids, each linked to its neighbor through a covalent peptide bond (Figure 3-1). Proteins are therefore also known as polypeptides. Each type of protein has a unique sequence of amino acids, exactly the same from one molecule to the next.

Detailed explanation-4: -Amino acids are the smallest and basic structural units of proteins. Amino acids of same or different types combine together to form a polypeptide chain and many polypeptide chains, in turn, join to form a complex structure called protein.

Detailed explanation-5: -A protein is a large, organic molecule made up of smaller molecules of amino acids. Although small proteins can contain as few as 50 amino acids, they are typically much larger, consisting of hundreds or even thousands of amino acids.