1. Warm Up
What are the relationship between CELLULAR RESPIRATION and PHOTOSYNTHESIS?
CELLULAR RESPIRATION – the splitting apart of glucose by water to produce carbon dioxide and energy
PHOTOSYNTHESIS – the splitting apart of water by energy to produce glucose from carbon dioxide, with oxygen given off

2. What is Photosynthesis?
Takes Place in Plant’s Leaves
Conversion of Light Energy
Provides Chemical Energy
Base of Almost All Food Chains

3. The “Typical” Plant Cell
Cell Wall
Vacuole
Chloroplasts

4. Photosynthesis

5. Overall Reaction CO2 + H2O sunlight Sugar + O2
Chlorophyll
Chlorophyll and sunlight must be present
Takes place in a series of two reactions
Light reaction=first
Calvin Cycle=second

6. Photosynthesis

7. Are ALBINO(white) trees possible?
Albino (no melanin), melanin provides color

8. Light Reaction Dependent on sunlight (photons)
Takes place in chloroplasts (thylakoid membrane)
Reactants Products
H2O O2
Light ATP
NADPH
Overall Reaction
H2O sunlight/chlorophyll O2 + ATP + NADPH

9. Calvin Cycle “Dark Reaction”
Takes place in chloroplasts (stroma)
Does not require photons
Requires products of light reaction
Reactants
CO2
ATP
NADPH
Produces usable energy
Glucose

11. Comparison of the two Light Dark Thylakoid-grana stroma
Reaction
Light
Dark
Site of Occurrence
Thylakoid-grana
stroma
Initial Requirement (Reactants)
Light Energy, water, and chlorophyll A
ATP, NADPH, and CO2,
End Product
ATP, NADPH, Oxygen
Glucose, water, NADP, ADP and inorganic phosphate