Amylases are enzymes produced by specific cells in animals and plants, and bacteria also make them. In humans, amylase is released into the alimentary canal in saliva and in pancreatic juice.
(a(i))[2]
Explain what the term enzyme means.
(a(ii))[2]
Outline two structural features of enzyme molecules.
(a(iii))[2]
Give both the substrate and the product of amylase.
substrate [BLANK]
product [BLANK]
(b(i))[4]
Describe what the bar chart data show about enzyme activity and explain why this evidence is useful to biofuel producers.
(b(ii))[2]
Biofuels may be burnt in vehicle engines. Suggest how biofuels can lead to pollution and bring about environmental change.
Worked solution & mark scheme
This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: “a biological catalyst in living things” …