the building up and breaking down of molecules

6CO 2 + 6H 2 O (+ light energy)  C 6 H 12 O 6 + 6O 2 Carbon Dioxide and Water are COMBINED using light energy into Glucose and Oxygen

Smaller molecules CO 2 and H 2 O are BUILT into BIGGER MOLECULES (glucose) C 6 H 12 O 6 (Oxygen [O 2 ] is the waste product of photosynthesis.)

Carbohydrates are the most common form of energy obtained from food. Starches are common carbohydrates. They have twice as many hydrogen atoms as oxygen atoms, and all carbohydrates contain carbon.

Starches form when sugar, glucose, join together in a long chain. Starches need to be broken down into sugars to be digested. Whole grains are good for you, because it takes the digestive system longer to break them down. When it takes longer to digest them, the energy lasts longer.

the chain is broken apart When starch is digested, into individual glucose molecules!

After the chain is broken down, glucose is used by cells for energy: C 6 H 12 O O 2  6 CO H 2 O + energy Glucose is BROKEN DOWN when combined with Oxygen into Carbon Dioxide & Water as waste products

 During Photosynthesis smaller molecules are built into larger molecules.  During Digestion larger molecules are broken down into smaller molecules.

 In your interactive notebook!  Your molecules don’t need to be perfect, but you need to SHOW the difference between photosynthesis and digestion, based on what happens to the molecules in each process.