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Bio220 Exam 2
Exam 2 Material
28
Biochemistry
Undergraduate 4
10/23/2011

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Cards

Term
Thermodynamics
Definition
Movement of Heat
Term
Equilibrium constant
Definition
Concentration of product/concentration of reactant over equilibrium
Term
Equilibrium Constant
Definition
System is at its lowest state of Gibbs free energy at...
Term
Stable
Definition
At equilibrium system is..
Term
1st Law of Thermodynamics
Definition
Energy is not created or destroyed- just exchanged into different forms (Conservation of Energy)
Term
2nd Law of Thermodynamics
Definition
All system are striving towards equilibrium
Term
Phospholipids
Definition
Hydrophillic heads, hydrophobic tails
Term
DeltaG
Definition
storage medium for potential energy
Term
At Equilibrium
Definition
Forward reaction is unfavorable
backward reaction is favorable
Reaction proceeds to the left
Term
Real Biological Conditions
Definition
Reaction proceeds to the RIGHT- towards equilibrium
Forward Reaction=Exergonic
Term
Difference in size between Eukaryotes and Prokaryotes is..
Definition
1.Surface area/Volume Ratio
2. Diffusion Rates
3.Concentration of Reactants and enzymes
Term
Endocytosis
Definition
Process in which a cell takes up solutes by enclosing them in vacuoles pinched off from the plasma membrane:
Term
Differs between Prokaryotes and Eukaryotes
Definition
1.Cytoskeleton
2.Internal Membrane System
3. Organization of DNA
4. Compartmentalization
Term
Nucleus
Definition
Region where RNA is synthesized from DNA
Term
Nucleus
Definition
Organelle that contains DNA
Term
Chloroplasts
Definition
Converts Nitrate to Ammonia for protein synthesis
Term
Concentration Potential
Definition
Movement of molecules or ions against a gradient would be considered
Term
1st law of thermodynamics
Definition
Energy cannot be created nor destroyed but can be convert to different forms
Term
Exothermic
Definition
Reactions in which heat is released
Term
Negative
Definition
Reactions in which heat is released will have a DeltaH that is..
Term
Entropy
Definition
Measure of randomness or disorder
Term
2nd law of thermodynamics
Definition
DeltaS>0
Term
Endergonic
Definition
If DeltaG is positive the reaction is said to be..
Term
DeltaH and DeltaS
Definition
Delta G is dependent of the values of
Term
Enzymes
Definition
Lower the activation energy of a reaction
Term
Enzymes use these strategies to help reactions proceed
Definition
1.Bond distortion
2. Bringing substrates together in the correct orientation
3. Rearrangement of positive and negative charges
Term
Coenzymes
Definition
Small organic molecules needed by some enzymes in order for them to perform their function are
Term
Reaction velocity of a reaction
Definition
Dependent on the substrate concentration
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