energetics and enzymes Flashcards
free energy and ATP: explain the concept of free energy, how changes in free energy can be used to predict the outcome of a reaction and how ATP is used as a carrier of free energy to drive energetically unfavourable reactions
1
Q
define Gibb’s free energy
A
amount of energy in molecule that could perform useful work at constant T
2
Q
what does delta G measure
A
amount of disorder (1st and 2nd laws of thermodynamics)
3
Q
for energetically favourable reactions, what is delta G
A
negative
4
Q
what bond is broken when ATP forms ADP and Pi
A
anhydride bond
5
Q
what type of reaction is ATP undergoing to obtain a very negative delta G value
A
hydrolysis
6
Q
what reactions is ATP hydrolysis linked with
A
energetically unfavourable reactions e.g. peptide synthesis
