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3.3 Maintaining internal environments

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Question 2
F

On a hot day, sweat is released onto the surface of the skin.

How does sweating help to cool the body?

[1]
A

Sweat on the skin reflects heat from the Sun away from the body surface.

B

Sweat is colder than the blood, so it cools the blood flowing under the skin.

C

Energy is transferred from the skin to the sweat as the sweat evaporates.

D

Sweat carries heat out of the body as it passes through pores in the skin.

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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