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1.2 What happens in cells (and what do cells need)?

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Question 40

An enzyme breaks down maltose into glucose. A student measures the mass of glucose produced each minute at different maltose concentrations, keeping the amount of enzyme the same.

a.

The results show that increasing the maltose concentration from 6 g/dm³ to 10 g/dm³ does not increase the rate. Explain why.

[2]
b.

At a maltose concentration of 10 g/dm³, the student adds more enzyme. Predict and explain the effect on the rate of glucose production.

[2]
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1.2 What happens in cells (and what do cells need)? Questions

  1. GCSE
  2. /Biology
  3. /1.2 What happens in cells (and what do cells need)?

184 exam-style questions on OCR GCSE Biology 1.2 What happens in cells (and what do cells need)?, covering 1.2.1 Structure of DNA, 1.2.2 Nucleotides and complementary bases, 1.2.3 Protein synthesis, 1.2.4 DNA structure and the proteins made, 1.2.5 Investigating enzymatic reactions, and 1.2.6 Mechanism of enzyme action. Each one has a worked solution and a mark scheme showing where the marks go.

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