Photosynthesis Where does this occur? Why? “Putting together with light” Where does this occur? Mesophyll – Palisade Cells Why? Where majority of chloroplasts are located

Stages of Photosynthesis   Capturing the Sun’s Energy- energy from sun is absorbed by chlorophyll and used to split molecules of Water (H2O) into molecules of Hydrogen (H) and Oxygen (O2). Producing Sugar- Energy from sun is also used to combine Hydrogen (H) with Carbon Dioxide (CO2) to produce glucose (C6H12O6) H H H20 O H + CO2 = C6H12O6

6 6 C6H12O6 + O2 6 CO2 + H2O + Energy “Putting together with light” Reactants? Products? Light 6 6 C6H12O6 + O2 6 CO2 + H2O + Energy carbon water glucose oxygen dioxide

Chemical equation: C6H12O6 + 6 O2 6 CO2 + 6 H2O + Energy Light carbon water glucose oxygen dioxide 6 CO2 + 6 H2O + Energy

Cellular Respiration Where does this occur? Chemical equation: ATP Process by which organisms break down food to release energy Oxygen must be present Where does this occur? mitochondria Chemical equation: C6H12O6 + 6 O2 6 CO2 + 6 H2O + Energy glucose Reactants? Products? ATP ATP (Adenosine Triphosphate ) – an energy-giving molecule used by all living cells. ALL CELLS PERFORM CELLULAR RESPIRATION!

Why is cellular respiration needed by all living organisms? * To perform all life functions * Grow, Repair damaged cells, Replace worn out cells Key Points: Photosynthesis uses sunlight to create stored energy in the form of glucose/food. Cellular respiration uses food/glucose to release energy.

Photosynthesis Review