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3.3 Maintaining internal environments

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Question 16
F

Solutions given to patients through a drip into a vein must have the same water potential as blood plasma.

Which statement explains why?

[1]
A

so that the blood cells take in extra water and do not become dehydrated

B

so that the kidneys can filter all of the solution out of the blood quickly

C

so that glucose in the solution can enter the red blood cells by osmosis

D

so that there is no net movement of water into or out of the blood cells

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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