(d) Complete the following word equation for the enzyme catalase. 1 Question Acceptable Answer Not Mark acceptable 4 (a) enzyme has an active site 1 (must be clear active site on enzyme) 1 enzyme/active site is complementary/matching Same shape/specific to substrate enzyme/active site Enzyme fits substrate (or vice (b) denatured/ destroyed 1 changes shape/ reduced activity/ stops working (c) pH OR concentration of enzyme/substrate concentration 1 [any correct eg Higher] water and oxygen [any order] 1 (d) both for 1 mark
(d) Complete the following word equation for the enzyme catalase. 1 Question Acceptable Answer Not acceptable Mark 4 (a) enzyme has an active site (must be clear active site on enzyme) enzyme/active site is complementary/matching shape/specific to substrate Same enzyme/active site Enzyme fits substrate (or vice 1 1 (b) denatured/ changes shape/ reduced activity/ stops working destroyed 1 (c) pH OR concentration of enzyme/substrate [any correct eg Higher] concentration 1 (d) water and oxygen [any order] both for 1 mark 1
biology-n5-past-paper-questions-cell-biology.docx