1. Photosynthesis = converting light energy (sunlight) to chemical energy (glucose)
How plants make food
Occurs in the chloroplast ; carried out by producers / autotrophs
All reactions are facilitated by enzymes
Involve oxidation and reduction reactions

4. Structure of a Chloroplast

5. Chloroplasts contain the pigment chlorophyll, making plants appear green.

7. Reactants and Products of Photosynthesis Reactions
Location
Reactants
Products
Light Dependent
Thylakoid Membranes
Sunlight
H20
ATP
NADPH O2
Light independent
(Calvin Cycle)
Stroma
CO2
C6H12O6 (Glucose)

8. G3P TP
C6H1206 (exported)

9. Main Environmental Factors that Affect the Rate of Photosynthesis

10. 2) Knowing the products of this process, what are at least 2 ways to measure the rate of photosynthesis? 3) Why would temperature affect the rate of photosynthesis? 4) What does it mean to be oxidized? What does it mean to be reduced?

11. 1) Draw the diagram and label the following:
2) Knowing the products of this process, what are at least 2 ways to measure the rate of photosynthesis? i) Measure biomass ii) Rate of CO2 uptake iii) Rate of O2 production 3) Why would temperature affect the rate of photosynthesis? Photosynthesis reactions are facilitated by enzymes. Enzyme activity is affected by temperature. Increase in temperature (kinetic energy) results in increase in enzyme activity, unless enzymes are denatured. 4) What does it mean to be oxidized? What does it mean to be reduced? See next slide

12. Photosynthesis Involves Oxidation and Reduction (Redox) Reactions

13. NADP+ gets reduced (gains electrons) during the light reactions
NAPH gets oxidized (loses electrons) during the Calvin Cycle

16. How does ATP supply energy
How does ATP supply energy? Energy is stored in the chemical bonds between atoms.
ADP = adenosine diphosphate
“phosphorylation” = adding a phosphate group to ADP