1. OVERVIEW OF PHOTOSYNTHESIS
HW 3-4
AUTOTROPHS SUCH AS PLANTS, ALGA, PROTISTS, CYANOBACTERIA AND PURPLE SULFUR BACTERIA CONVERT LIGHT ENERGY FROM THE SUN INTO STORED CHEMICAL ENERGY
Link Photosynthesis overview

2. Overall photosythesis rxn: 6 CO2 + 6 H2O → C6H12O6 + 6 O2
Objective of photosynthesis: Synthesize carbohydrates from CO2 and H2O
Light energy is added to drive rxn

3. Comparison of Photosynthesis and Aerobic Respiration
Aerobic heterotrophs have only mitochondria whereas photoautotrophs have both mitochondria and chloroplasts
6 CO2 + 6 H2O + Light energy  C6H12O6 + 6 O2
C6H12O6 + 6 O2  6 CO2 + 6 H2O + Energy for life’s work (ATP + heat)
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings

4. Link to mitochondria and chloroplasts

5. Figure 10.2 Focusing in on the location of photosynthesis in a plant
STOMATA = plural of STOMA
Link to VA Tech Photosynthesis Animation
STOMA : AN OPENING IN THE LEAF FOR EXCHANGING GASES
Mesophyll cells contain chloroplasts
STROMA – Fluid in chloroplast surrounding Thylakoid membrane; site of Calvin Cycle
TEM = Transmission Electron Microscopy

6. CROSS SECTION OF A CHLOROPLAST
STROMA – Fluid in chloroplast surrounding Thylakoid membrane; site of Calvin Cycle
THYLAKOID – disc shaped membrane enclosed compartment; site of Light Reactions
LAMELLA – connects Granum
GRANUM – stack of thylakoids

7. Figure An overview of photosynthesis: cooperation of the light reactions and the Calvin cycle (Layer 1)

8. Figure An overview of photosynthesis: cooperation of the light reactions and the Calvin cycle (Layer 2)

9. Figure An overview of photosynthesis: cooperation of the light reactions and the Calvin cycle (Layer 3)

10. Figure An overview of photosynthesis: cooperation of the light reactions and the Calvin cycle (Layer 3)