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TPR Biology Lecture 1
Class Session 1
33
Biology
Not Applicable
06/14/2012

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Term
First Law of Thermodynamics?
Definition
Energy of the universe is constant
Term
Gibbs free energy equation
Definition
ΔG = ΔH - TΔS
Term
Equation for Enthalpy?
Definition
ΔH = ΔE - PΔV
Term
Second Law of Thermodynamics
Definition
Disorder, entropy, of the universe tends to increase.
Term
A favorable reaction is one which ΔG < or > than 0? What is this called?
Definition
Favorable ΔG < 0, Spontaneous
Term
The negative Amino Acids?
Definition
HAL
Histidine, Argenine, Lysine
Term
The Positive Amino Acids?
Definition
Glutamic Acid
Aspartic Acid
Term
Michaelis - Menton Constant "Km" is what?
Definition
Substrate concentration at which the reaction velicty is half its max.
Vmax/2
Term
A low Km indicates what?
Definition
not much substrate is required to get the reaction rate to half the max. Enzyme has high affinity for this substrate.
Term
The three meanings of oxidize?
Definition
Attach O2, or increase bonds to it.
Remove Hydrogen
Remove Electrons
Term
The three meanings of reduce?
Definition
Remove O2, decrease bonds to O2
Add Hydogen
Add Electrons
Term
Oxidative Catabolism of glucose has what 4 steps?
Definition
Glycolysis, Pyruvate Dehydrogenase Complex, Krebs Cycle, Electron Transport Chain.
Term
Stoichiometric equation of glucose oxidation/combustion.
Definition
C6H12O6 + 6O2 --> 6CO2 + 6H20
Term
Glycolysis Occurs where?
Definition
Cytoplasm
Term
PDC & Krebs Cycle occurs where?
Definition
Matrix of the mitochondria
Term
ETC occurs where?
Definition
Inner membrane of the mitochondria
Term
Products of Glycolysis
Definition
2 Net ATP (4 total)
2 NADH
2 Pyruvate
Term
What step of glycolysis is known as the committed step?
Definition
F-6-P ---> F-1,6 BP
(catalyzed by phosphofructokinase)
Term
No NAD+ has what effect on glycolysis?
Definition
Inhibits it!
Term
Pyruvate undergoes what before Krebs?
Definition
Oxidative Decarboxylation, release CO2 and converted into an acetyl group with a CoA.
Term
The Acetyl - CoA combines with what molecule at the start of Krebs?
Definition
Oxaloacetate
Term
The first intermediate formed in Krebs is what?
Definition
Citrate (citric acid)
Term
What is produced through krebs (1 turn)
Definition
2 CO's, 3 NADH's, 1 FADH2, 1 GTP
Term
Per 1 Glucose, what is formed in Krebs?
Definition
4 CO2, 6 NADH, 2 FADH2, 2 GTP
Term
From glycolysis to end of Krebs Cycle, how many ATP, NADH, FADH2 are produced?
Definition
2 ATP, 2 cytoplasmic NADH, 8 Mitochondrial NADH, 2 FADH2
Term
ATP synthase & ETC are located where?
Definition
Inner mitochondrial membrane
Term
Oxidative Phosphorylation is what?
Definition
Oxidation of high energy electron carriers (NADH, FADH2) coupled with phosphorylation of ADP --> ATP
Term
ETC consists of how many carriers? Who reduces who?
Definition
5 e- carriers, each member reduces the next.
Term
Glucogenolysis
Definition
Glycogen breakdown, found in liver/muscles. Carbohydrate storage.
Term
Glycogenolysis occurs in response to ?
Definition
Glucagon, when blood sugars are low, glucose is released into blood.
Term
Which class of enzymes covalently modifies through the removal of phosphate?
Definition
Phosphatases
Term
proteases are responsible for what ?
Definition
breaking of peptide bonds that join the amino acids in a protein
Term
Kinases are a class of enzymes that?
Definition
that catalyzes the transfer of a phosphate group or another high-energy molecular group to an acceptor molecule.
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