EVERYDAY SCIENCE

Detailed explanation-1: -Proteins are among the most abundant organic molecules in living systems and are way more diverse in structure and function than other classes of macromolecules. A single cell can contain thousands of proteins, each with a unique function.

Detailed explanation-2: -Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass. Consequently, the interactions between water and the other constituents of cells are of central importance in biological chemistry.

Detailed explanation-3: -Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs.

Detailed explanation-4: -Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective; they may serve in transport, storage, or membranes; or they may be toxins or enzymes.

Detailed explanation-5: -Proteins exist as colloidal particles in cells such as in the protoplasm. Most of the antigens are made of proteins and thus they cannot easily pass through the animal membrane due to their heavy molecular weight and large size. This is the reason why they are referred to as giant molecules or macromolecules.