Photosynthesis Flashcards
Chloroplast
A cell organelle which contains chlorophyll
Function of Chlorophyll in plants
To absorb light
To trap energy
Advantages of chlorophyll donating a number of chemicals
Absorb more energy
Trap a greater range of light
Events of Dark stage of photosynthesis
- Energy from ATP
- NADPH releases electrons
- NADPH releases protons
- CO2 combines with electrons
- CO2 combines with protons to form glucose
How is the dark stage necessary for the continuation of the light stage
Products of the dark stage are used in the light stage
Ways to increase plant production in a greenhouse
- Heat to/keep at optimum temp
- Increase the lighting
- Use a range of colours of lights
- Increase the CO2
Role of stomata in Photosynthesis
- Gas exchange
- Allows entry/ exit of CO2
Role of chlorophyll molecules in photosynthesis
Traps/absorbs light
Particles released from chlorophyll during the light stage
Electrons
Balanced photosynthesis equation
6CO2 + 6H2O - C6H12O6 + 6O2
Products of light stage
Protons
Electrons
Oxygen
Events of light stage
- ATP to ADP
- NADPH to NADP
- CO2 converted to glucose
What are the 2 stages of Photosynthesis
- Light Stage/ Light dependant stage
- Dark Stage/ Light independent stage
Pathway 1
- Electrons picked up by acceptor and passed through carriers back to chlorophyll
- Electrons lose energy
Pathway 2
- H2O splits
- NADP formed
- NADPH formed
-Electrons picked up by acceptor & passed through carriers - O2 released and ATP produced
