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7.4 Blood glucose and the urinary system

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Question 14
H

A person with type 1 diabetes injected too much insulin. Their blood glucose concentration fell to a dangerously low level.

A doctor gave the person an injection of glucagon.

a.

Explain how injecting too much insulin caused the blood glucose concentration to fall.

[2]
b.

Explain how the glucagon injection increased the blood glucose concentration.

[2]
c.

A glucagon injection may not work if the person has not eaten for a long time. Suggest why.

[2]
d.

Explain why the control of blood glucose concentration by insulin and glucagon is an example of negative feedback.

[2]
Markscheme

7.4 Blood glucose and the urinary system Questions

  1. GCSE
  2. /Biology
  3. /7.4 Blood glucose and the urinary system

45 exam-style questions on Edexcel GCSE Biology 7.4 Blood glucose and the urinary system, covering 7.4.1 Insulin and blood glucose control, 7.4.2 Glucagon and blood glucose regulation, 7.4.3 Type 1 and type 2 diabetes, 7.4.4 Structure of the urinary system, 7.4.5 Structure and function of the nephron, 7.4.6 ADH and water regulation, 7.4.7 Treatments for kidney failure, and 7.4.8 Production of urea in the liver. Each one has a worked solution and a mark scheme showing where the marks go.

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