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Exploring Life Chapter 8
Key terms for Exploring Life Exploring Life Chapter 8, Concepts; 8.1, 8.2, 8.3 and 8.4
13
Biology
8th Grade
10/18/2010

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Term
Chloroplast
Definition
organelle found in some plant cells and certain unicellular organisms where photosynthesis takes place
Term
Chlorophyll
Definition
pigment that gives a chloroplast its green color; uses light energy to split water molecules during photosynthesis
Term
stroma
Definition
thick fluid contained in the inner membrane of a chloroplast
Term
thylakoid
Definition
disk-shaped sac in the stroma of a chloroplast; site of the light reactions of photosynthesis
Term
light reactions
Definition
chemical reactions that convert the sun's energy to chemical energy; takes place in the membranes of thylakoid in the chloroplast
Term
Calvin cycle
Definition
cycle in plants that makes sugar from carbon dioxide, H+ ions, and high-energy electrons carried by NADPH
Term
wavelangth
Definition
distance between adjacent waves
Term
electromagnetic spectrum
Definition
range of types of electromagnetic energy from gamma waves to radio waves
Term
paper chromatography
Definition
laboratory technique used to observe the different pigments in a material
Term
photosystem
Definition
cluster of chlorophyll and other molecules in a thylakoid
Term
pigment
Definition
chemical compound that determines a substance's color
Term
carbon cycle
Definition
The process by which carbon moves from inorganic to organic compounds and back.
Term
Greenhouse Effect
Definition
Carbon dioxide in the atmosphere that traps heat from the sun that would otherwise escape into space.
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