Flashcards in Biochemistry L04 Enzymes and Cellular Energy Deck (10):
Name 3 factors that affect enzyme activity
The reactant of a catalysed reaction
Define active site
Site of an enzyme that binds to the substrate in a configuration that forces it to resemble the transition state. It is highly specific
Define activation energy
The energy barrier that a reaction must overcome in order to occur
What is the difference between an endergonic and exergonic reaction?
Energonic reactions absorb energy
Exergonic reactions release energy
If a reaction has ΔG = -30kJ/mole, is it endergonic or exergonic?
How does a catalyst affect ΔG, Ea (activation energy) and the equilibrium of a reaction?
No change in ΔG
No change in equilibrium
What is ΔG of ATP hydrolysis?
Name 1 molecule other than ATP that can be used as cellular energy currency (or are precursors of ATP)