Carbohydrates are made of C, H, & O in a 1:2:1 ratio. Carbohydrates are the main energy source for living things. It's a breakdown of sugars supplies. Monosaccharides are a single unit of sugar, and the smallest of the CHOs. Disasaccharides are molecules made up of two sugars joined together by dehydration synthesis. Polysaccharides are large molecules made of many sugars, and make ideal storage products.
Lipids:
Lipids store more energy that CHOs because the chains are longer. The important parts of biological membranes are the water proof coverings. Steroids are lipids that act as a chemical messenger.
Proteins:
Proteins contain C, H, O, plus nitrogen. They are formed from amino acids and joined together. More than 20 amino acids can be joined in any order or number to make countless proteins. Chains are folded and twisted, giving each protein a unique shape. Van der Waals forces and hydrogen bonds help maintain the protein's shape. The shape of protein is important to its function. Proteins provide structure, they aid chemical activities, and help fight diseases.
Carbohydrates, proteins, and lipids are a huge part of a humans everyday life, and we need them to survive. We need chemistry to survive.
