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

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Question 33

Two test tubes contain the same volume and concentration of lipid. The same volume of lipase solution is added to each tube, but the lipase solution added to the second tube has first been diluted with water. Temperature and pH are kept the same.

The lipid in the second tube takes longer to be broken down completely.

Explain why diluting the lipase solution increases the time taken for the lipid to be broken down completely.

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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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