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Assignment #2
The Kerbs Cycle and Electron Transport
12
Biology
9th Grade
12/23/2011

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Term
Aerobic
Definition
process that requires oxygen
Term
Pyruvic acid
Definition
a 3-carbon molecule‚ CH3COCOOH which results from the splitting of glucose in glycolysis
Term
NADPH
Definition
(Nicotinamide adenine dinucleotide phosphate)that serves as an electron carrier.
Term
ATP Synthase
Definition
large protein that uses energy from H+ ions to bind ADP and a phosphate group together to produce ATP.
Term
Krebs cycle
Definition
Second stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions.
Term
acetyl-CoA
Definition
A molecule of co enzyme A temporarily bonded to a 2-carbon (acetyl) group remaining from the break-down of pyruvic acid.
Term
FADH2
Definition
(Flavin Adenine Dinucleotide)FAD‚ FADH are another electron carrier‚ similar to NAD+ which plays a role in the Krebs cycle.
Term
Glycogen
Definition
a storage polysaccharides found in the liver and muscles
Term
Electron transport chain(ETC)
Definition
Uses the high-energy electrons from the Krebs cycle to convert ADP into ATP.
Term
Citric acid
Definition
An important intermediate in the citric Acid Cycle(Krebs cycle)which breaks down glucose into water and carbon dioxide when oxygen is present.
Term
ATP
Definition
(Adenosine triphosphate) An organic compound composed of adenosine and three phosphate groups.
Term
Muscles
Definition
Only contain enough ATP for a few seconds of intense activity. After the ATP is nearly gone ATP is produced by lactic acid fermentation. If your using your muscles for longer than a couple of minutes than cellular respiration generates the rest of supply of ATP.
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