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

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Question 30
F

A student investigates the effect of temperature on the breakdown of starch by amylase.

The table shows the student's results.

Table

Temperature in ∘C^\circ\text{C}∘CTime taken for starch to be broken down in s\text{s}s
20180
3090
4030
50120

How many times faster was the rate of reaction at 40 ∘C40\ ^\circ\text{C}40 ∘C than at 20 ∘C20\ ^\circ\text{C}20 ∘C?

[1]
A

0.170.170.17 times

B

222 times

C

666 times

D

150150150 times

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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