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Biology flash cards
chap 7 & 8
32
Biology
9th Grade
10/27/2008

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Term
autograph
Definition
an organism that makes its own food
Term
photosynthesis
Definition
the process in whcih plants use the sun's energy to convert water and carbon dioxide into sugars
Term
producers
Definition
produce the organic molecules that serve as food for the organisms in their ecosystem
Term
heterotrophs
Definition
organisms that cannot make their own food
Term
consumers
Definition
must obtain food by eating other producers or other consumers
Term
cellular respiration
Definition
a chemical process that uses oxygen to convert the chemical energy stored in organic molecules into another form of chemical energy (ATP)
Term
kinetic energy
Definition
the energy of motion
Term
potential energy
Definition
energy that is stored due to an object's position or arrangement
Term
thermal energy
Definition
type of kinetic energy- random molecular motion
Term
chemical energy
Definition
potential energy where the potential to perform work is due to the arrangement of the atoms within the molecules
Term
calorie
Definition
the amount of energy required to raise the temperature of 1 gram of water by 1 degree celcius
Term
ATP
Definition
stands for adenosine triphosphate ATP is the source of energy used for most cellular work
Term
aerobic
Definition
requires oxygen
Term
electron transport chain
Definition
electron carriers in a series of transfers
Term
metabolism
Definition
what a cell's chemical process makes up all together
Term
glycolosis
Definition
the 1st stage in breaking down a glucose molecule
Term
krebs cycle
Definition
2nd step; finishes the breakdown of pyruvic acid molecules to carbon dioxide releasing more energy in the process
Term
ATP synthase
Definition
protein structures in the mitochondria that act like miniature turbines
Term
fermentation
Definition
process where muscle cells make ATP without using oxygen
Term
anaerobic
Definition
an evironment without oxygen
Term
Choloroplast
Definition
the cellular organelle where photosynthesis takes place
Term
Choloroplast
Definition
the cellular organelle where photosynthesis takes place
Term
chlorophylls
Definition
chemical compounds that give chloroplasts a green color
Term
light reactions
Definition
convert the energy in sunlight to chemical energy
Term
calvin cycle
Definition
makes sugar from the atoms in carbon dioxide plus the hydrogen ions and high-energu electrons carried by NADPH
Term
wavelength
Definition
the difference between 2 adjacent waves
Term
electromagnetic spectrum
Definition
the range of types of electromagnetic energy
Term
pigment
Definition
chemical compounds that make a substance's color
Term
paper chromatography
Definition
a labratory technique that allows you to observe the different pigments in a green leaf
Term
photosystems
Definition
clusters of chlorophyll and other molecule in the thylakoid membrane that contain hundreds of pigments that acts like a light-gathering panel
Term
carbon cycle
Definition
the process by which carbon moves from inorganic to organic compounds and back
Term
greenhouse effect
Definition
property that keeps the world climate warm enough for living things
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