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Test 3
Biology
14 cards·by mcg321
Autotrophs
produce their own food
Photoautotrophs
produce organic molecules from inorganic molecules using light energy
Heterotrophs
unable to manufacture their own food from inorganic materials; rely on other organisms.
Photosynthesis
makes sugar and oxygen gas from carbon dioxide and water
Stroma
thick fluid enclosed by inner membrane; location of sugar synthesis
Photosynthesis
H2O is oxidized, CO2 is reduced
Cellular Respiration
glucose is oxidized , O2 is reduced
Light Reactions
occur in the thylakoid membranes; converts light energy to chemical energy - ATP and NADPH;
produces O2 as a waste product
Calvin Cycle
Occurs in stroma; assembles sugar molecules from CO2 using ATP and NADPH
Chlorophyll a
Absorbs blue-violet and red light; reflects green light; participates directly in the light
reactions
Chlorophyll b
absorbs blue and orange light; reflects yellow-green; conveys absorbed energy to
chlorophyll a
Carotenoids
yellow-orange pigments that absorb mainly blue-green light; provides photoprotection
Photon
fixed quantity of light energy
Photosystems
clustrs of chlorophyll molecules, other pigments, and proteins; found in the thylakoid
space