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

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Question 20

A company uses lipase to break down lipid in wastewater. It tests the lipase at different pH values. The table shows the mean mass of lipid broken down in 10 minutes.

pHMean mass of lipid broken down in 10 minutes in g
40.8
62.4
85.7
103.1
120.4

The company needs the lipid to be broken down as quickly as possible.

Give the pH that should be used.

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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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