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Bio 172
TEST 2
10
Biology
Undergraduate 2
09/30/2008

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Term
Adenosine Triphosphate (ATP)
Definition
  • A molecule that consists of adenine, sugar, and 3 phosphate groups.
  • can be hydrolyzed to release energy
  • used by cells to store and transfer energy
  • high potential energy
Term
Adenosine Diphosphate
Definition
  • consists of adenine, sugar, and 2 phosphate groups
  • the energy released during the oxidation is used to transfer P to ADP to make ATP
Term
Redox reaction
Definition
  • A class of chemical reactions that involves the loss and gain of electrons
  • LEO GER
Term
Phosphorylation
Definition
addition of a phosphate group to a molecule
Term

3 steps of cellular respiration

Definition
  1. glucose is broken down to pyruvate
  2. pyruvate is oxidized to CO2
  3. compounds reduced in steps 1 and 2 are oxidized in processes that usually lead to production of ATP
Term
Glycolysis
Definition
A series of 10 chemical reactions that oxidize glucose to produce pyruvate and ATP
Term
Electron carrier
Definition
donates electrons readily
Term
Krebs Cycle
Definition
  • Series of chemical reactions, during which acetyl CoA (from glycolysis) is broken down to CO2, producing ATP and reduced compounds for the ETC. 
  • Occurs in the mitochondria
  • When completed, Glucose is completely oxidized to CO2
  • PYRUVATE enters and CO2, NADH, FADH2, and ATP come out
Term
Electron Transport Chain
Definition
  • a set of molecules involved in a coordinated series of redox reactions in which the potential energy lost by electrons is used to pump protons from one side of the membrane to the other.
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