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3.3 Maintaining internal environments

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Question 3

Most people have two kidneys. The two kidneys filter 180 litres180\text{ litres}180 litres of blood every day.

How much blood does one kidney filter per hour?

A

3.75 millilitres3.75\text{ millilitres}3.75 millilitres

B

7.5 litres7.5\text{ litres}7.5 litres

C

3750 millilitres3750\text{ millilitres}3750 millilitres

D

7500 millilitres7500\text{ millilitres}7500 millilitres

Markscheme

3.3 Maintaining internal environments Questions

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

22 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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