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8.1-8.3
ATP, Photosyntheis...
15
Biology
10th Grade
10/29/2012

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Term
Heterotrophs
Definition
Organisms that obtain food by consuming other living things.
Term
Autotrophs
Definition
Organisms that make their own food.
Term
light-dependent reactions
Definition
set of reactions in photosynthesis that use energy from light to produce ATP and NADPH
Term
light-independent reactions
Definition
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; also called the Calvin cycle
Term
Calvin cycle
Definition
the light-independent reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as suga
Term
adenosine triphosphate (ATP)
Definition
compound used by cells to store and release energy
Term
photosynthesis
Definition
process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches
Term
pigment
Definition
light-absorbing molecules used by plants to gather the sun’s energy
Term
chlorophyll
Definition
principal pigment of plants and other photosynthetic organisms
Term
thylakoid
Definition
saclike photosynthetic membranes found in chloroplasts
Term
stroma
Definition
fluid portion of the chloroplast; outside of the thylakoids
Term
NADP+
Definition
(nicotinamide adenine dinucleotide phosphate) carrier molecule that transfers high-energy electrons from chlorophyll to other molecules
Term
photosystem
Definition
cluster of chlorophyll and proteins found in thylakoids
Term
electron transport chain
Definition
series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions
Term
ATP synthase
Definition
cluster of proteins that span the thylakoid membrane and allow hydrogen ions (H+) to pass through it
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