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3.3 Maintaining internal environments

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Question 7
F

Some red blood cells are placed in pure water.

What happens to the red blood cells?

[1]
A

Water moves into the cells by diffusion and the cells shrink.

B

Salt moves into the cells by osmosis and the cells burst.

C

Water moves out of the cells by osmosis and the cells shrink.

D

Water moves into the cells by osmosis and the cells burst.

Markscheme

3.3 Maintaining internal environments Questions

  1. GCSE
  2. /Biology
  3. /3.3 Maintaining internal environments

72 exam-style questions on OCR GCSE Biology 3.3 Maintaining internal environments, covering 3.3.1 Importance of a constant internal environment, 3.3.2 The skin and body temperature, 3.3.3 Insulin and blood sugar, 3.3.4 Glucagon and blood sugar, 3.3.5 Type 1 and type 2 diabetes, 3.3.6 Osmotic changes in body fluids, 3.3.7 Kidneys and water balance, 3.3.8 Structure of the kidney and tubule, 3.3.9 ADH and kidney tubule permeability, and 3.3.10 Responses to temperature and osmotic challenges. Each one has a worked solution and a mark scheme showing where the marks go.

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