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3.3 Maintaining internal environments

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Question 24
H

The release of ADH is controlled by negative feedback.

Which statement describes this negative feedback?

[1]
A

When blood water potential rises, more ADH is released, so more water is reabsorbed.

B

When blood water potential falls, more ADH is released, so more water is reabsorbed.

C

When blood water potential falls, less ADH is released, so less water is reabsorbed.

D

When blood water potential rises, more ADH is released, so it rises even further.

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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