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Cambridge IGCSE Biology practice

Paper 4 structured question: Homeostasis

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Homeostasis

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Paper 4Theory (Extended)2 marks

Blood glucose regulation

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Role of Glucagon in Blood Glucose Control

When blood glucose levels fall, glucagon is released to restore normal levels by acting on the liver.

  1. a

    Describe the role of glucagon in regulating blood glucose levels.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 4 structured question: Homeostasis

Paper 4Theory (Extended)2 marks

Description

Blood Glucose Regulation by the Liver

The liver helps maintain blood glucose levels by storing glucose as glycogen or releasing glucose when needed. Insulin and glucagon are hormones involved in this process.

  1. a

    Describe how insulin affects blood glucose levels and the liver.

    Aim for approximately 2 distinct marking points.

    [2]