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3.3 Maintaining internal environments

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Question 8

A person goes for a long run on a hot summer day without drinking any water. As a result, they produce a much lower volume of highly concentrated, darker urine compared to a cool day.

Which of the following correctly describes the physiological responses that contribute to this change in urine concentration?

A

Decreased sweating and decreased ADH secretion

B

Decreased sweating and increased ADH secretion

C

Increased sweating and decreased ADH secretion

D

Increased sweating and increased ADH secretion

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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