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

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Question 27
F

A student investigates the effect of pH on the activity of amylase.

Which variable must the student keep the same?

[1]
A

The pH of the buffer solution added

B

The time taken for the starch to disappear

C

The colour change of the iodine solution

D

The temperature of the reaction mixture

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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