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Chapter 6
Energy and Metabolism
17
Biology
Undergraduate 1
10/10/2010

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Term
Metabolism
Definition
All of the chemical reactions that occur in a cell
Term
Anabolic Reactions
Definition
Large molecules are synthesized from smaller molecules
Term
Catabolic Reactions
Definition
Large molecules broken down into smaller components
Term
Biochemical Pathways
Definition
Series of reactions catalyzed by enzymes
Term
Intermediates
Definition
The product of one reaction becomes the substrate for the next.
Term
Feedback Inhibition
Definition
End product inhibits an earlier reaction. Regulates some biochemical pathways.
Term
Autotrophs
Definition
Synthesize complex organic compounds from smaller inorganic precursors using energy from sunlight
Term
Heterotroph
Definition
Obtain organic compounds produced by other organisms and harvest energy from these compounds.
Term
Laws of Thermodynamics
Definition

Energy can not be created or destroyed, only transformed. 

The disorder in the universe is always increasing.

Term
Photosynthesis Formula
Definition
6CO+ 12H2O + Light -> C6H12O+ 6H2O + Energy (Heat and ATP)
Term
Cellular Respiration Formula
Definition

6O+ C6H12O-> 6CO2 + 6H2O + Energy (Heat and ATP)

 

Term
Chemical Energy
Definition
Potential energy stored in chemical bonds. Chemical energy stored in glucose is transferred into chemical energy stored in ATP
Term
Kinetic Energy
Definition
Energy of motion
Term
Potential Energy
Definition
Stored Energy
Term
Redox Reactions
Definition
Reduction gains an electron, oxidation loses and electron. Lower Energy is the oxidized molecule, Higher energy is the reduced molecule. Defined by electron transfer, but usually a proton follows the electron so look for H's (in reduced molecule).
Term
Electron Carriers
Definition
NADH, FADH2, NADPH
Term
Adenosine Triphosphate (ATP)
Definition
Connecting Phosphates on ATP (Connections are high energy bonds). If high energy bond broken, energy is released. Pi is the inorganic phosphate.
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