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chapter 8
n/a
13
Biology
10th Grade
11/29/2010

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Term
Autotroph
Definition
organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
Term
Heterotroph
Definition
organism that obtains energy from the foods it consumes; also called a consumer 
Term
adenosine triphosate 
Definition
one of the principal chemical componds that living things use to store and release energy
Term
photosynthesis 
Definition
overall process in which sunlight is used to convert carbon dioxide and water into oxygen and high energy sugars
Term
pigment 
Definition
any substance whose presence in the tissues or cells of animals or plants color them
Term
chlorophyll
Definition
light collecting unit in a chloroplast; principal pigment of plants and other photosynthetic organisms 
Term
thylakoid
Definition
saclike photosynthetic membrane found in chloroplasts
Term
photosystem
Definition
light collecting units of the chloroplast
Term
stroma
Definition
region outside the thylakoid membranes in chloroplasts
Term
NADP+
Definition
(nicotinamide adenine dinucleotide phosphate) one of the carrier molecules that transfers high-energy electrons from chlorophyll to other molecules
Term
light-dependent reactions 
Definition
reactions of photosynthesis that use energy from light to produce ATP and NADPH
Term
ATP synthase 
Definition
large protein that uses energy from H+ ions to bind ADP and a phosphate group together to produce ATP
Term
Calvin cycle 
Definition
reactions of photosythesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugars
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