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

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Question 29

A technician measures the time taken for starch to disappear from identical samples when different concentrations of amylase are used.

The results are shown in the table.

Amylase concentration in %\%%Time for starch to disappear in s\text{s}s
0.50120
0.7580
1.0060
1.5040
2.0030

A process must break down the starch in 48 s.

Calculate the amylase concentration expected to give this time. Use the pattern in the results and show your working.

[2]
Markscheme

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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