Control of water and ion content of the body

Control of water and ion content of the body Quiz

Spec 3.4.3 · Oxford AQA IGCSE Biology: Quiz

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  1. 1. Which organ converts toxic ammonia into the less toxic substance urea?

    • A. Kidney
    • B. Liver
    • C. Pancreas
    • D. Skin

  2. 2. A student's blood becomes more concentrated after a long run without drinking water. What happens to ADH release and urine produced?

    • A. ADH increases; a small volume of concentrated urine is produced
    • B. ADH increases; a large volume of dilute urine is produced
    • C. ADH decreases; a small volume of concentrated urine is produced
    • D. ADH decreases; a large volume of dilute urine is produced

  3. 3. Which gland releases ADH into the blood?

    • A. Pancreas
    • B. Liver
    • C. Pituitary gland
    • D. Adrenal gland

  4. 4. A urine sample from a healthy person contains no glucose. Why is this expected?

    • A. Glucose is too large to be filtered out of the blood by the kidney
    • B. All filtered glucose is reabsorbed back into the blood by the kidney
    • C. The liver removes all glucose before blood reaches the kidney
    • D. Glucose is only produced during exercise

  5. 5. Explain, using the idea of negative feedback, what happens when a person drinks a large volume of water.

    • A. ADH release increases, more water is reabsorbed, and a small volume of concentrated urine is produced
    • B. ADH release decreases, less water is reabsorbed, and a large volume of dilute urine is produced
    • C. ADH release stays constant because water intake does not affect the kidneys
    • D. ADH release increases, causing more ions to be excreted instead of water

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