Macromolecules

Review

Element: made of only one atom Example: C = Carbon

Molecule: smallest unit of a substance, 2 or more elements Example: O2 = Oxygen

Compound: made of 2 or more different types of elements Example: CO2 = carbon dioxide

Macromolecules Macromolecules: Large molecules liked together

by smaller molecules Organic Compound: Chemical compound that

contains carbon atoms

4 Types:Carbohydrates Lipids Proteins Nucleic Acids

Carbohydrates

Carbohydrates: molecules including sugar and starch, release energy Made of carbon, hydrogen, and

oxygen Examples:

Sugars and Starches Candy, soda, pasta, bread

Carbohydrates

Some foods that contain a lot of Carbohydrates

Pasta Bread Potato

Lipids

Lipids: molecules including fats, oils, and waxes, store energy Help make up the cell membrane Examples:

Fats, Oils, and Waxes Candles, butter, cooking oil

Lipids

Cooking Oils Butter Candles

Things that contain lipids

Lipids

Camel

Polar Bear

Animal Examples

Protein

Protein: large molecules made up of amino acids, your body uses them for growth, repair, transport, and digestion

Examples: eggs, fish, meat, nuts – your muscles

Protein

Some examples of protein

MuscleMeats

Note: The meat you eat is just the muscle of some animal. For example, beef is cow muscle.

Same

Nucleic Acids

Nucleic Acids: store genetic information about an organism.

Examples: DNA RNA

Nucleic Acids

DNA