Edexcel GCSE Biology

Hormones & endocrine system

Edexcel GCSE Biology revision on Hormones & endocrine system. Aligned to the Pearson Edexcel GCSE Biology 1BI0 specification. This bank has 5 practice questions on this topic.

Sample questions (3 of 5)

  1. Question 1

    Which specific hormone is released by the pancreas to lower blood glucose concentration?

    • A) Glucagon hormone
    • B) Insulin hormone
    • C) Adrenaline agent
    • D) Thyroxine serum
    Show answer

    Answer: Insulin hormone

    When blood glucose rises, the pancreas secretes insulin. Insulin promotes the uptake of glucose into body cells and the conversion of glucose into glycogen in the liver, effectively lowering blood sugar levels.

  2. Question 2

    What is the primary physiological effect of adrenaline on the heart rate during a fight-or-flight response?

    • A) It decreases rate
    • B) It increases rate
    • C) It stops heartbeat
    • D) It slows the pulse
    Show answer

    Answer: It increases rate

    Adrenaline prepares the body for immediate action. By increasing the heart rate, the body ensures that oxygen and glucose are delivered to the muscles more rapidly to support increased metabolic demand.

  3. Question 3

    Which endocrine gland acts as the master gland by secreting hormones that stimulate other glands?

    • A) Adrenal gland
    • B) Pituitary gland
    • C) Thyroid gland
    • D) Pancreas gland
    Show answer

    Answer: Pituitary gland

    The pituitary gland is located in the brain and secretes a variety of hormones that regulate body conditions. These hormones often signal other endocrine glands, such as the thyroid or ovaries, to release their own hormones.

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