B4 Enzymes

Question 1

Define enzyme

Answer 1

proteins that function as

biological catalysts

Question 2

Explain enzyme action

Answer 2

Explain the diagram of the enzyme with the active site, enzyme molecule, substrates, when the reaction takes place, the enzyme substrates complex when the substrates are in the enzyme and when the substrates leave the enzyme it denatures so the enzyme can no longer catalyze the reaction

Question 3

Explain the effect of changes in pH on enzyme activity

Answer 3

Heat and ph can denature an enzyme. When an enzyme denatures its active site, it will permanently denature the shape so the substrate can no longer fit. The enzyme can no longer catalyze the reaction

Question 4

explain why enzymes work slowly at 10c*

Answer 4

They work very slowly because they do not have enough energy so they will work slowly so there will be less successful collisions

Question 5

explain why do enzymes do not work at all at 60 C*

Answer 5

They do not work at all because of the heat. They denature and no more successful collisions can happen