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

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Question 29
F

A student investigates the activity of catalase.

The student collects 30 cm3 of oxygen in 2 minutes.

What is the mean rate of oxygen production in cm3/s\text{cm}^3/\text{s}cm3/s?

[1]
A

0.250.250.25

B

4.04.04.0

C

151515

D

606060

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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