photosynthesis. 1. mesophyll a layer of cells that contain & are responsible for most of the...
TRANSCRIPT
Photosynthesis
1. Mesophyll
1. Mesophyll
A layer of cells that contain & are responsible for most of the plant’s photosynthesis
chloroplasts
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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
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Mesophyll Cell
3. ChloroplastThe site of ___________ Photosynthesis
Double-membrane bound organelle
5. Inner membrane
4. Outer membrane
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6. Stroma:7. Thylakoid
8. Grana:
8. Grana
resides in these membranes
Chlorophyll
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Fluid filled space within the chloroplast
A stack of _________thylakoids
Why are leaves green?Substances that absorb light are called
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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 _________
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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.
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NADPHATP
Photosynthesis: The Light Reaction
NADPHATPwater (H2O)oxygen (O2)
Summary of Light Reactions
6 H20
6 O2
ATP
NADPH
What are and used for
in Photosynthesis?
NADPH
ATP
ATP & NADPH energy are used to convert
CO2 into glucoseNADPH
ATP
6 CO2
Sugar!
This is done during the Calvin Cycle in the stroma…
Summary of Photosynthesis
6 H20
6 O2
ATP
NADPH
6 CO2
C6H12O6
(sugar)
Calvin Cycle
Photosynthesis Equation:
• The General Formula for Photosynthesis is:
6CO2 + 6H2O + (Light ) C6H12O6 + 6O2
Calvin Cycle Light Reactions Light Reactions Calvin Cycle Light Reactions
Photosynthesis is responsible for the majority of the biomass
in our biosphere
This biomass supports the upper trophic levels, but only 10% of their energy can be transferred
up the food chain
Let’s play the photosynthesis magnet board race!
