D3.3 Homeostasis

D3.3 Homeostasis Quiz

IB Biology HL: Quiz

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5 questions, one answer each

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  1. 1. Which hormone raises blood glucose?

    • A. Insulin
    • B. Glucagon
    • C. ADH
    • D. TSH

  2. 2. HL: Which substance is present in glomerular filtrate but normally absent from urine?

    • A. Urea
    • B. Glucose
    • C. Water
    • D. Sodium ions

  3. 3. HL: A person is dehydrated. Which change occurs?

    • A. Less ADH, fewer aquaporins in collecting duct membranes
    • B. More ADH, more aquaporins in collecting duct membranes
    • C. More ADH, less water reabsorbed
    • D. Less ADH, more concentrated urine

  4. 4. HL: What keeps the medulla at a high osmotic concentration?

    • A. Active transport of Na⁺ from the ascending limb of the loop of Henle
    • B. Ultrafiltration in the glomerulus
    • C. ADH released into the medulla
    • D. Glucose reabsorption

  5. 5. HL: During vigorous exercise, blood flow to which organ stays about the same?

    • A. Skeletal muscle
    • B. Gut
    • C. Kidneys
    • D. Brain

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