7.2 flashcards

Question 1

What do enzymes do?

Answer 1

catalyze chemical reactions

Question 2

What is a substrate?

Answer 2

a substance that the enzyme can act on

Question 3

What is an active site?

Answer 3

the region that binds to substrate

Question 4

What happens to the enzyme reaction rate when enzyme concentration increases?

Answer 4

It goes up because there is a higher success rate for collisions

Question 5

What happens to the enzyme reaction rate when substrate concentration increases?

Answer 5

It goes up because there are more succesful reactions but slows down at one point because enzymes can only handle so many collisions

Question 6

What happens to the enzyme reaction rate when the temperature increases?

Answer 6

It goes up until a certain point where it goes down because enzymes start to denature due to it being too hot

Question 7

What happens to the enzyme reaction rate when the pH increases?

Answer 7

Depending on the enzyme, it will go up and down at certain levels. If pH is too basic, the enzyme will start to break apart

Question 8

What do activators do?

Answer 8

activators turn enzymes “on” by changing the shape an altered active site so the substrate can bind to it

Question 9

What do inhibitors do?

Answer 9

inhibitors turn enzymes “off” by making it so the substrate cannot bind to the active site

Question 10

What do non-competitive inhibitors do?

Answer 10

competitive inhibitors bind to an allosteric site, which alters the shape of the active site so that the substrate cannot bind to it