Two tubes contain the same mass of starch in the same total volume. Tube P contains more active amylase than tube Q. All other conditions are the same, and starch is completely broken down in both tubes.
Which comparison is correct?
Q finishes sooner; both tubes produce the same final quantity of sugar.
P finishes sooner; P produces a greater final quantity of sugar than Q.
Q finishes sooner; Q produces a greater final quantity of sugar than P.
P finishes sooner; both tubes produce the same final quantity of sugar.
44 exam-style questions on Edexcel GCSE Biology 1.3 Enzymes, covering 1.3.1 Mechanism of enzyme action, 1.3.2 Denaturation of enzymes, 1.3.3 Factors affecting enzyme activity, and 1.3.4 Measuring energy in food by calorimetry. Each one has a worked solution and a mark scheme showing where the marks go.