Unit 7.2 Flashcards
What is the definition of enzyme?
They are catalysts that lower the amount of energy needed to activate a reaction.
What is the definition of substrate?
A substrate is what connects to the enzyme to create a reaction
What is the definition of active site?
The active site is where the substrate and enzyme meet
What is the definition of activation energy?
Activation energy is how much energy is needed for the substrate and enzyme to create a reaction.
What are the properties of enzymes?
Reaction specific, Not consumed in reaction, Made of protein, and affected by cellular conditions
Explain the relationship between reaction rate and substrate concentration. What does that graph look like?
This is the collision theory - as you add more substrates there is more options for the enzymes to collide with, so eventually you will und up running gout of enzymes to collide with which means the graph will flatten out at the top.
Explain the relationship between reaction rate and enzyme concentration. What does that graph look like?
This is the collision theory, which means more enzymes = higher collision probablility but eventually we will run out of substrates to collide with, so the probablility will flatten out. The graph look like a steady curve that eventually flattens out.
Explain the relationship between reaction rate and temperature. What does that graph look like?
As we increase temperature the collision theory goes up. If the temperature keeps increasing though, eventually it will get too hot, which causes denaturation. The makes the cell population start to go down. This means the graph goes up, reaches a peak, then goes back down.
Explain the relationship between reaction rate and pH. What does that graph look like?
Optimal pH depends of the environment the cell is in. This means that the graph is difffernt depending of the substance of cell that you are working with.
How would you maximize enzyme activity considering all the factors discussed in class?
You could raise the temperature a little and increase the enzyme and substrate concentrations. Also having the pH level match the environment would help too.
Compare and contrast inhibitation of activation of enzymes.
The both make the enzyme u functional, but one is in the activation site and the other is somewhere else on the enzyme that still change the function.
