Enzymes

Question 1

What do enzymes do?

Answer 1

Carefully control chemical reactions to get the right amount of substances

Question 2

How can you usually increase the rate of reaction?

Answer 2

Increasing the temperature

Question 3

What do enzymes act as?

Answer 3

Biological catalysts

They reduce the need for high temperatures and we only have enzymes to speed up useful chemical reactions in the body

Question 4

What is a catalyst?

Answer 4

A substance which increases the speed of a reaction without being changed or used up in the reaction

Question 5

What are enzymes made up from?

Answer 5

Proteins

Which are made up from chains Amino acids

Question 6

As well as catalysts what do proteins act as?

Answer 6

Structural components of tissues, hormones and antibodies

Question 7

What is an enzymes shape like?

Answer 7

Specific and has a unique shape that fits onto the substance involved in the reaction

( active site )

Question 8

How can you increase the rate of an enzyme catalysed reaction?

Answer 8

Increase the temperature

Question 9

What happens if you increase the temperature too much?

Answer 9

Some of the bonds holding the enzyme together break which destroys the enzymes special shape

The enzyme is denatured due to the activité site substrate complex being destroyed

Question 10

How does pH affect enzymes?

Answer 10

If it’s too high or too low the pH interferes with the bonds holding the enzyme together which changes the shape and denatures the enzyme

Question 11

What do all enzymes have?

Answer 11

An optimum pH. (It’s often neutral)