Enzymes

Question 1

What is metabolic , anabolic and catabolic reactions ?

Answer 1

1. chemical reactions in living organisms
   2.reactions that build molecules
   3.reactions that break down molecules

Question 2

what is a catalyst ?

Answer 2

A catalyst is a substance that helps to increase the rate of chemical reactions and is not changed by the reaction

Question 3

what are enzymes ?

Answer 3

proteins that function as biological catalysts

Question 4

name two factors that affect the rate of reaction with a enzyme and explain why

Answer 4

1. temperature - it affects the amount of kinetic energy that a particle has , therefore the more energy and movement leads to more successful collisions between enzymes and substrates
2. pH -when you change the pH you alter the boning in the enzyme

Question 5

what happens if the temperature goes over the optimum temperature?

Answer 5

The kinetic energy increases too much leading to bonds being broken in the protein structure and the active site changes shape. Meaning that the substrate is no longer complementary to the enzyme

Question 6

what happens if the pH changes too much?

Answer 6

The enzymes become denatured and the bonding of the protein structure is broken and the substrate is no longer complementary

Question 7

Give 5 enzymes and state what they break down

Answer 7

1.amylase -starch
2.lipase - lipids
3.protease - proteins
4.maltase-glucose
5.sucrase-sucrose