LIFE SCIENCE

Detailed explanation-1: -Proteins are organic compounds that consist of carbon, hydrogen, oxygen, nitrogen, and, in some cases, sulfur. They are made up of repeating units called amino acids. They provide cells with energy, form tissues, speed up chemical reactions throughout the body, and perform many other cellular functions.

Detailed explanation-2: -Hydrocarbons, like alkanes, alkenes and alkynes are all organic molecules and so are alcohols, carboxylic acids and carbohydrates.

Detailed explanation-3: -Four important classes of organic molecules-carbohydrates, lipids, proteins, and nucleic acids-are discussed in the following sections.

Detailed explanation-4: -Each of these exists as a polymer, composed of the monomers shown in the table. monosaccharide, disaccharides, and polysaccharides; quick energy for the cell. and a little O. sometimes S.