Enzymes

Question 1

Define Enzyme

Answer 1

Biological catalysts

Question 2

Structure of Enzyme

Answer 2

Globular proteins that contain long chains of amino acids which are folded into a specific shape

Question 3

Describe the lock and key model

Answer 3

Each enzyme has an active site where a certain substrate with a complementary shape fits into.

Question 4

Describe the induced fit hypothesis

Answer 4

The active site of an enzyme actually changes shape slightly as the substrate enters

Question 5

Why does the enzyme speed up the reaction? According to the induced fit hypothesis

Answer 5

The initial interaction is weak but causes the enzyme to bind to the substrate more. This puts strain on the substrate and lowers the activation energy of the reaction.

Question 6

Define intracellular enzymes

Answer 6

Enzymes that act within the cell and produce polymers and from monomers

Question 7

Define extra cellular enzymes

Answer 7

Enzymes that are sent out by a cell to break down large nutrient molecules in a process called digestion

Question 8

Define catabolic

Answer 8

When an enzyme breaks down a substrate

Question 9

Define anabolic

Answer 9

When an enzyme builds up a molecule