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Cellular Energy

ATP, Photosynthesis, & Cellular Respiration

TermDefinition
photosynthesis an anabolic pathway that converts energy from the sun into chemical energy for use by the cell
adenosine triphosphate (ATP) compound used by the cells to store and release energy
sunlight the source of nearly all energy for life
light-dependent reactions a set of reactions in photosynthesis that use energy from light to produce ATP and NADPH; occurs in the thylakoids
light-independent reactions a set of reactions in photosynthesis that do not require light; energy from ATP and NADPH is used to build high-energy compounds such as sugar
chloroplast organelle where photosynthesis takes place
chlorophyll principal pigment of plants and other photosynthetic organisms
autotrophs organisms that make their own food; plants
heterotrophs organisms that consume other organisms for energy because they are unable to make their own food
chemoautotrophs organisms that get their energy from inorganic substances such as HS (hydrogen sulfide)
thylakoid saclike membranes found in chloroplasts; the location of the light-dependent reactions
stroma fluid portion of the chloroplasts; outside of the thylakoids and location of the light-independent reactions
ATP synthase enzyme that spans the thylakoid membrane and produces ATP rom ADP when hydrogen ions (H+) pass through it
NADP+ nicotinamide adenine diphosphate; carrier molecule that transfers high-energy electrons from chlorophyll to the Calvin cycle
Calvin cycle the light-independent reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugar
electron transport chain a series of electron carrier proteins that shuttle (transport) high-energy electrons in preparation for ATP-generating reactions
photosystem a cluster of chlorophyll and proteins found in thylakoids
Created by: traceeharts
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