PROTEIN

• Biochemistry . any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the diet of all animals and other nonphotosynthesizing organisms,
• Examples: Meat, Veggies and grains

LIPIDS

• any of a group of organic compounds that are greasy to the touch, insoluble in water, and soluble in alcohol and ether: lipids comprise the fats and other esters with analogous properties and constitute, with proteins and carbohydrates
• Examples: fatty, waxy and greasy

CARBOHYDRATES

• any of a class of organic compounds that are polyhydroxy aldehydes or polyhydroxy ketones, or change to such substances on simple chemical transformations, as hydrolysis, oxidation, or reduction, and that form the supporting tissues of plants and are important food for animals and people.
• Examples: sugars and starches

NUCLEIC ACIDS

• Examples: DNA and RNA
• Functions:store and transit energy

MACROMOLECULES