Enzymes

Question 1

What is an enzyme?

Answer 1

An organic catalyst.

Question 2

What is metabolism?

Answer 2

All the chemical reactions in an organism.

Question 3

Catalyst

Answer 3

Speeds up a reaction without being used up in the reaction.

Question 4

Functions of enzymes

Answer 4

Act on a substrate
Form products
Made of protein.

Question 5

What affect enzyme activity

Answer 5

Temperature

PH

Question 6

Immobilised enzymes

Answer 6

Attached to each other or an inert material.

Question 7

Benefits of immobilised enzymes

Answer 7

Can b reused
More stable
Cheaper
Easy to separate from product

Question 8

IE uses

Answer 8

Convert lactose to glucose and galactose.

Convert glucose to fructose.

Question 9

Experiments

Answer 9

Pg 111

Question 10

Physical methods of EI

Answer 10

Adsorption -attached to glass beads/ceramics.
Enclosed by a membrane.
Trapped in a gel.

Question 11

Chemical EI methods

Answer 11

Bonded to a support

Bonded to each other.

Question 12

Optimum pH

Answer 12

7

Question 13

Bioprocessing

Answer 13

The use of enzyme-controlled reactions to produce a product.

Question 14

Bioreactor

Answer 14

A vessel where cells or their products are used to make a product.