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1. Mesophyll
1. Mesophyll
A layer of cells that contain & are responsible for most of the plant’s photosynthesis
chloroplasts
Page 2
2. Stomata
Openings in plant leaves that allow for to occur
(CO2) passes in and (O2) passes out.
CO2
O2
gas exchange
Carbon Dioxide Oxygen
Page 2
Mesophyll Cell
3. ChloroplastThe site of ___________ Photosynthesis
Double-membrane bound organelle
5. Inner membrane
4. Outer membrane
Page 2
6. Stroma:7. Thylakoid
8. Grana:
8. Grana
resides in these membranes
Chlorophyll
Page 2
Fluid filled space within the chloroplast
A stack of _________thylakoids
Why are leaves green?Substances that absorb light are called
Page 5
Chlorophyll a
Chlorophyll b
Carotenoids
Chlorophyll absorbs and light, reflecting
pigments
red blue green
PhotosynthesisOccurs in 2 Steps:1) Light Reactions in the thylakoid2) Calvin Cycle in the stroma.
• Calvin Cycle is also referred to as the Dark Reactions or Light Independent Reactions
Calvin Cycle (Light Independent or Dark Reactions)
Photosynthesis: The Light Reaction
• are chemical factories powered by the sun.
• The particles of sunlight are called _________
Page 5
Chloroplasts
photons
• Their thylakoids have the pigment chlorophyll.
• Chlorophyll act like solar panels that transform light energy into energy carriers called and .
• To make and , the thylakoid uses
and makes gas.
Page 5
NADPHATP
Photosynthesis: The Light Reaction
NADPHATPwater (H2O)oxygen (O2)
ATP & NADPH energy are used to convert
CO2 into glucoseNADPH
ATP
6 CO2
Sugar!
This is done during the Calvin Cycle in the stroma…
Photosynthesis Equation:
• The General Formula for Photosynthesis is:
6CO2 + 6H2O + (Light ) C6H12O6 + 6O2
Calvin Cycle Light Reactions Light Reactions Calvin Cycle Light Reactions
This biomass supports the upper trophic levels, but only 10% of their energy can be transferred
up the food chain