1. Living Things are composed of 4 Main Elements

2. Our focus will be Carbon (C)
Carbon cannot be created or destroyed on the earth.
It constantly cycles through earth’s systems by changing form.

3. Carbon can be found in the Biosphere
Carbon is a major part of all macromolecules
Macro means large
A macromolecule is a large molecule.

4. Macromolecules containing chemical energy
Carbohydrates
Function: Supply the body with energy
Examples:
Sugar (Glucose)
Pasta/rice
Potatoes
Bread
Fruits

5. Function: Storing energy Examples: Cheese Fatty meats
Macromolecules containing chemical energy
2. Lipids (Fats, Oils)
Function: Storing energy
Examples:
Cheese
Fatty meats
Mayonnaise/Dressing
Oils

6. Function: Building and Repairing of Body Parts Examples:
Other Macromolecules found in living things
3. Proteins
Function: Building and Repairing of Body Parts
Examples:
Found in muscle
Hair, Nails
Skin
Other Organs

7. Function: Chemical Codes Examples: DNA RNA
Other Macromolecules found in living things
4. Nucleic Acids
Function: Chemical Codes
Examples:
DNA
RNA

8. Carbon moves from the atmosphere to plants.
In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2).
Through the process of photosynthesis, carbon dioxide is pulled from the air to make plant food (sugar) from carbon.

10. Organisms that change carbon dioxide to chemical energy in the form of glucose (sugar) are known as:
AUTOTROPHS
Autotrophs make their own food so they are called the PRODUCERS