Photosynthesis Photosynthesis is the process in...
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Photosynthesis 1415.notebook 1 January 09, 2015 We know that Animals and Plants both use oxygen and glucose to make energy (ATP) via cellular respiration. Animals eat their glucose and breathe in oxygen to do cellular respiration Plants MAKE their glucose and oxygen via PHOTOSYNTHESIS Introduction to Photosynthesis
Transcript of Photosynthesis Photosynthesis is the process in...
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We know that Animals and Plants both use oxygen and glucose to make energy (ATP) via cellular respiration.
Animals eat their glucose and breathe in oxygen to do cellular respiration
Plants MAKE their glucose and oxygen via PHOTOSYNTHESIS
Introduction to Photosynthesis
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PhotosynthesisPhotosynthesis is the process in which plants make their own food (glucose) and oxygen happens to be a byproduct.
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Photosynthesis and Cellular Respiration
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PhotosynthesisPhotosynthesis occurs in the Chloroplast
Contain a pigment called chlorophyll
Chlorophyll absorbs all visible light waves but green
This is why plants appear to be green in color
Chloroplasts are located in the mesophyll layer of the leaf around the stomata
Stomata: tiny pores on the surface of the leaf that allow CO2 and water vapor to enter as well as O2 to exit
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PhotosynthesisStructure of the Cholorplast:
1. Outer Membrane: Encloses the entire chloroplast
2. Inner Membrane: Encloses the stroma
3. Stroma: Thick fluid inside the inner membrane where the
Calvin Cycle occurs
4. Thylakoids: Disk shaped sac where the Light Reactions occur
a. Granum: A stack of thylakoids
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Photosynthesis and Cellular Respiration
CR:
PS:
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Photosynthesis: 2 Main Stages1.) Light Reactions
Location: Thylakoid
Main Goal: Convert energy in sunlight to usable energy
Process:
a. Capture light energy using the pigment chlorophyll
b. Split water into hydrogen and oxygen
releases oxygen to cellular respiration and the atmosphere
c. Convert all energy to ATP or NADPH
NADPH is an electron carrier
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Photosynthesis: 2 Main Stages2.) Calvin Cycle (Dark Reactions)
Location: Stroma
Main Goal: Use the ATP and NADPH from the light reactions to produce glucose
Process:
a. Use the ATP and NADPH and Carbon Dioxide to make glucose (C6H12O6)
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• By converting light energy to chemical energy, photosynthesis is the first step in the flow of energy through an ecosystem.
Some of that chemical energy then passes from producers to consumers when they eat the plants
Even when people eat meat, you can trace its stored energy back to photosynthesis.
Photosynthesis is the ultimate source of all the food you eat and all the oxygen you
breathe.
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Photosynthesis and Cellular Respiration
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Cuticle
Upper Epidermis
Palisade Layer
Spongy Layer
Lower Epidermis
Chloroplasts
Spongy Cells
Guard CellsStomata
Vein
Xylem
Phloem
M
E
S
O
P
H
Y
L
L
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