Question 1
Which row correctly matches a gland with the hormone it secretes?
- Pancreas and adrenaline
- Ovaries and testosterone
- Testes and testosterone
- Adrenal glands and insulin
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Answer: C (1)
Question 2
Define the term hormone.
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- a chemical substance (1)
- produced by a gland (1)
- carried by the blood (1)
- alters the activity of one or more specific target organs (1)
- Max 3
Question 3
Compare nervous control and hormonal control of the body. Refer to speed of action and duration of effect.
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- nervous control is fast / acts very quickly (1)
- hormonal control is slower / acts more slowly (1)
- effect of nervous control is short-lived / does not last long (1)
- effect of hormonal control lasts longer (1)
Question 4
A student is suddenly frightened by a loud noise. The hormone adrenaline is secreted. State three effects of adrenaline on the student.
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- increased breathing rate (1)
- increased heart rate (1)
- increased pupil diameter / pupils dilate (1)
- ignore sweating, ‘more energy’
Question 5
Supplement (what this means)
Supplement: only for the Extended papers (2 and 4). Core students can skip it. What the labels meanExplain how the effects of adrenaline on blood glucose concentration and heart rate help the body in a ‘fight or flight’ situation.
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- adrenaline increases blood glucose concentration (1) allow glycogen converted to glucose (in the liver)
- faster heart rate delivers glucose and oxygen to muscles more quickly (1)
- glucose used in (aerobic) respiration (1)
- to release energy for muscle contraction / running (1)
- Max 3