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Chapter 10- Energy Metabolism: Photosynthesis (Heterotrophs (All animals,…
Chapter 10- Energy Metabolism: Photosynthesis
Energy and Reducing power
Energy Carriers transfer energy from pigments to endergonic reactions
guanosine triphosphate (G3P)
photophosphorylation
adenosine triphosphate(ATP)
adenosine diphosphate (ADP)
occurs only in chloroplasts in light
substrate-level phosphorylation
occurs in all parts of plant at all times
Adenosine Triphosphate-->Adenosine Diphosphate->Adenosine Triphosphate
Reducing Power
reducing atom
adding electrons
oxidization NAD+ and NADP+f are oxidizing agents
Other electron carriers
Photoautotrophs
Gather energy directly from light
.
Photosynthesis
Environmental and internal Factors
Light
converted to chemical energy
light compensation point
point at which the level of light matches respiration
Leaf Structure
hot dry climates leaf cells are closer together
Water
Most plants keep stomata open during the day
Prevents entry of CO2
C4 Metabolism
CO2 is absorbed moved and concentrated
Crassulacean
(CAM) metabolic adaptation improves cons of water. wile permitting photosynthesis
Acid Metabolism
#
improves cons of water while permitting photosynthesis
Stroma Reactions (Dark Reactions)
Light Dependent Reactions
#
Photosynthesis in Bacteria and Cyanobacteria
Bacteria
Cyanobacteria
uses chlorophyll A
Plants and People
Photosynthesis
Global Warming
Global Climate Change
Heterotrophs
All animals
All completely parasitic plants
All fungi
all non photosynthetic prokaryotes