By Alex Nelson


Contains Hydrogen, Carbon and Oxygen in a 1:2:1 ratio. The polysaccharides which are polymers, are starches, and the monosaccharides which are monomers are sugars. Carbohydrates are the main source of energy in most living things

Functions - Used to build structures of the bodies of some plants and animals.

Examples - Cereal, crackers, and bread products.


Proteins are made of carbon, hydrogen, nitrogen, and oxygen. Their monomers are amino acids, and the polymers are just proteins. Proteins must have a specific shape to work.

Functions - They increase speed of chemical reactions, create hormones, and transport molecules.

Examples - Meat, beans, and eggs.

Nucleic Acids

Nucleic acids contain hydrogen, carbon, oxygen, nitrogen, and phosphorus. The monomers are nucleotides, and the polymers are DNA and RNA.

Functions - Carries genetic material.

Examples - Adenine, thymine, and guanine


Lipids are made of carbon and hydrogen. The monomers are glycerol and fatty acids, and the polymers are just lipids.

Function - Long term energy storage, make up cell membrane, and signaling.

Examples - Milk, cheese, and meat. All contain saturated fat.