LAB 5 ENZYMES pg.77

Question 1

What are enzymes?

Answer 1

Proteins and sometimes nucleic acids that increase the rate of specific chemical reactions by acting as catalysts that lower activation energies.

Question 2

Why are enzymes essential to life?

Answer 2

Because most metabolic reactions would not take place at all without them

Question 3

What is amylase?

Answer 3

An enzyme that breaks down starches into simple sugars

Question 4

What is Amylose?

Answer 4

A main component of starch.

Question 5

How is Amylose digested?

Answer 5

Amylase chews off the glucose molecules from the end of the amylose, by breaking the glycoside bonds at the end of the polysaccharide.

Question 6

If amylose and amylase are left together in solution in a test tube for an extended period of time, what will be left in the test tube at the end?

Answer 6

Amylase and glucose will be left at the end.

Question 7

How does temperature affect the rate of reaction?

Answer 7

-Higher temperature = faster reaction because more energy/speed for collisions

-Lower temperature = slower reaction because less energy/speed for collisions

Question 8

What are competitive inhibitors?

Answer 8

Molecules that bind to the active site of an enzyme and inhibit the ability of the substrate to bind.

Question 9

What are non-competitive inhibitors?

Answer 9

Non-competitive inhibitors bind at a location other than the active site (allosteric site) , which results in a change of shape in the enzyme so that the enzyme cannot bind to the substrate.

Question 10

What is the formula for reaction rate?

Answer 10

1/(the time taken for the reaction to reach completion)