Metabolism & Thermodynamics
What is the first law of thermodynamics?
The law of thermodynamics stating that energy cannot be created or destroyed, only transferred or transformed.
The value of ΔG in a spontaneous reaction.
Negative
True or false. Enzymes have no affect on delta G.
True.
In competitive inhibition why does a reaction not occur?
The competitive inhibitor is covering the active site.
The ultimate form of entropy in any energy transformation.
Heat
Energy is high, describe the stability.
Low
Define enzyme.
A biological catalyst that will speed up the rate of reaction by lowering the energy of activation.
Noncompetitive inhibition occurs by
Destroys the enzyme's catalytic activity
What is thermodynamics?
The flow of energy through reactions
What is the second law of thermodynamics
Every energy transfer of transformation increases the entropy of the universe
What type of model do enzymes work in?
Double points if you can tell me what this model means.
Induced fit model
The induced-fit model is a theory that describes how enzymes bind to substrates and process them within an active site
One
CO2 + H2O + E -----> C6H12O6
What type of reaction is this?
Anabolic reaction
If ΔG starts at 60 and ΔG ends at 50, what is the change in ΔG? Will the reaction occur?
ΔG = -10
Yes, the reaction will occur
What reaction rate is faster? A catalyzed or an uncatalyzed reaction.
The reaction rate for an enzyme-catalyzed reaction is faster than the uncatalyzed reaction because it has a lower energy activation
Describe feedback inhibition
The final product of a multistep pathway that goes back to the beginning and shuts off the initial enzyme