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Biology I Test 2
Biology Test Flash Cards
22
Biology
Undergraduate 2
03/10/2008

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Term
Energy  
Definition
Capacity to do work, capacity for change
Term
Cells Aquire Energy from where?  
Definition
The Environment
Term
What are the two main types of energy  
Definition
Potential Energy and Kinetic Energy
Term
Potential Energy  
Definition
Energy of state or position, Stored Energy (A cat getting ready to pounce)
Term
Kinetic Energy  
Definition
Energy of movement, does work that alters the state or motion of matter. (Cat jumping onto a table)
Term
Metabolism  
Definition
Total of all Chemical Reactions that occur in an organism
Term
Anabolic Reactions  
Definition
Build Molecules - Require Energy  
Term
catabolic reactions  
Definition
break down complex molecules - Release Energy
Term
First law of Thermodynamics  
Definition
Energy is neither created or destroyed
Term
Second Law of Thermodynamics  
Definition
When energy is transformed some becomes unavailable to do work.
Term
Entropy  
Definition
When disorder increases
Term
Gibbs Free Energy  
Definition
Usable energy
Term
Triangle sign mean
Definition
change
Term
The change in usable energy can be measured how?
Definition
change in G = the change of H minus T multiplied by the change of S.
Term
if the change in G is positive...
Definition
Free energy is required
Term
if the change in G is negetive...
Definition
Free energy is released
Term
Exergonic Reaction  
Definition
Spontaneous reactions with a postive change in G so consumes energy
Term
endergonic reaction
Definition
Nonspontaneous reaction with a postive change in G and consumes energy
Term
ATP
Definition
Adenosine Triphosphate
Term
what does ATP do?  
Definition
Captures transfers and stores energy
Term
What is ATP composed of?  
Definition
Composed of ribose sugar, adenine and three phosphates.
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