Chapter 8 pre

Question 1

An enzyme lowers the __________________________ of a chemical reaction.

Answer 1

activation energy

Question 2

All of the chemical reactions in the cell are referred to as a cell’s ____________________________.

Answer 2

metabolism

Question 3

The best model for how an enzyme and substrate bind to one another is:

Answer 3

an induced fit model

Question 4

Substrates bind to an enzyme at the _________________________.

Answer 4

active site

Question 5

Enzymes are extremely _____________________.

Answer 5

specific

Question 6

Catabolic reaction ________
Anabolic reaction _______

Answer 6

Catabolic reaction- releases energy
Anabolic reaction- requires energy

Question 7

When you eat a meal, enzymes in your digestive system break down lipids into fatty acids. This is an example of __________ and it ___________ energy

Answer 7

Catabolism
Releases

Question 8

Quinazolinone binds to a bacterial enzyme at a place other than the active site, changing the shape of the enzyme and reducing its activity. Quinazolinone is an example of a(n):

Answer 8

allosteric inhibitor

Question 9

An allosteric inhibitor does which of the following?

Answer 9

Binds to an enzyme away from the active site and changes the conformation of the active site, decreasing its affinity for the substrate

Question 10

A competitive inhibitor competes with substrate for an _______________________ site of an enzyme.

Answer 10

active