Please enable JavaScript.
Coggle requires JavaScript to display documents.
Ch 10 Energy Metabolism: Photosynthesis (Energy and reducing power…
Ch 10 Energy Metabolism: Photosynthesis
Energy and reducing power
energy carriers
ATP
guanosine triphosphate
Reducing power
force electrons onto compunds
important to plants
reducing agents
NADH and NADPH
Other energy carriers
Cytochromes
small proteins
transfer agents
contain cofactor heme
Plastoquinones
transfer electrons
hydrophobic
pick 2 electrons/bond 2 proteins
travel little/ chloroplast mem. surface
Plastocyanin
small protein
carry electrons on metal atom
loosely
Photosynthesis
sunlight, CO2, and water= plant food
Light dependent reactions
creation of ATP and NADPH
Nature of Light
Nature of Pigments
absorbs certain wavelengths= color
Accessory pigments
chlorophyll b and carotenoids
chlorophyll a
absorbs some red/blue light
lacks some ideal characteristics
Absorption Spectrum
Action Spectrum
Electromagnetic radiation spectrum
radio waves
microwaves
infrared light
ultraviolet light
x-rays
gamma rays
Photosystems 1
absorbs wavelengths of 700nm
high energy electrons-NADP+-NADPH
Found in thylakoid membranes/plants, algae, etc
Photosystems 2
Found in thylakoid membrane of plants
sunlight to get water molecule electrons
Electron transport chain
electron carriers move electrons
Environmental factors
light
Sunlight quality
color of wavelengths
contains entire spectrum
Sunlight quantity
light intensity
clear day/ more light for photosynthesis
cloudy day/ less light
leaf structure
different plants/ different structure
different structures/ reduce water loss
water
water affects photosynthesis
stromata open (daytime)/ CO2 entry & water loss
stromata close(nightime)/ no CO2 used/ water retained
Internal factors
C4 metabolism/ C4 Photosynthesis
CO2 is absorbed, transported, concentrated in leaf
H2O is kept away from RuBP carboxylase
Crassulacean Acid Metabolism
improves H2O concentration/permits photosynthesis
almost identical to C4
carbon fixation pathway
stromata closed daytime= reduce water loss
stromata open night to gain CO2
