Key Area 4- Proteins

Question 1

Name 5 proteins

Answer 1

S- Structual
H- Hormones or Haemoglobin
A- Antibodies
R- Receptors
E- Enzymes

Question 2

What is the function of enzymes

Answer 2

Speeds up chemical reactions

Question 3

What is the function of Antibodies

Answer 3

Produced by white cells and protect body from harmful microbes

Question 4

What is the function of hormones

Answer 4

Chemical messengers

Question 5

Structural

Answer 5

Provide shape and suppport

Question 6

Receptors

Answer 6

Movement Of Molecules

Question 7

Haemoglobin

Answer 7

Carry oxygen around the body

Question 8

What happens at the active site?

Answer 8

In the same way that a key fits into a lock, so a substrate is thought to fit into an enzymes active site. The enzyme is the lock and the reactant is the key

Question 9

Name 2 degradation reaction (SAM)

Answer 9

. Amylase
Starch—————————-> maltose

. Catalase
Hydrogen peroxide——————> Oxygen + water

Question 10

Name the reaction with protein as the substrate

Answer 10

Pepsin
Protein—————> Amino Acid

Question 11

What is the reaction with a product of fatty acids

Answer 11

Lipase
Fat—————> Fatty Acids + Glycerol

Question 12

What is the ONLY synthesis reaction

Answer 12

Phosphorlase
Glucose-1-phosphate——————————> starch

Question 13

What’s optimum temperature

Answer 13

Enzymes work faster at warm temperature. The temperature at which enzymes are most active.

Question 14

synthesis

Answer 14

the product is being made from the enzymes and substrate

Question 15

Degradation

Answer 15

The product is broke down from the substrate

Question 16

What happens if the temperature and pH changes sufficiently beyond the enzymes optimum

Answer 16

The enzymes becomes denatured

Question 17

What happens when an enzymes denatured

Answer 17

It changes the shape of the enzymes which means the enzymes cannot fit into the substrate and the enzymes will no longer work.