Lecture 7. Energy and Metabolism Flashcards
1
Q
Standard free energy equation
A
ΔG = ΔG°’ + RTlnq
2
Q
R
A
Gas constant
3
Q
T
A
Absolute temperature in Kelvin
4
Q
q
A
Mass action ratio
5
Q
ΔG°’
A
Standard free energy at pH 7, 25°C and 1 atm
6
Q
What does q = at equilibrium?
A
Keq
7
Q
What does Keq equal at equilibrium?
A
Keq = e^-ΔG°’/2.5
8
Q
What can relatively small changes in ΔG°’ lead to in Keq?
A
Big changes
9
Q
What is the main energy carrier in the cell?
A
ATP
10
Q
What is Pi?
A
Inorganic phosphate
11
Q
What is PPi?
A
Pyrophosphate
12
Q
What can Keq be affected by?
A
Coupling reactions
13
Q
What happens in oxidation?
A
A compound donates electrons
14
Q
What happens in reduction?
A
A compound accepts electrons
15
Q
What does a strong oxidising agent want to do?
A
Accept electrons - O₂
