iGCSE Biology (0610)-16.5 Sexual hormones in humans – iGCSE Style Questions Paper 2

Question

A study investigated the effect on arm muscle surface area of taking testosterone and doing
exercise. The participants in the study were given either testosterone or a placebo. The placebo
does not contain any testosterone.
The bar chart shows the results of the study.

Which conclusion about the data in the graph is correct?
A    Exercise has no effect on arm muscle surface area.
B    No exercise and not taking testosterone has the greatest effect on arm muscle surface area.
C    Exercise has the same effect on arm muscle surface area as no exercise.
D    Taking testosterone increases arm muscle surface area.

Answer/Explanation

Ans
D

Question

The graph shows a hormone that is involved in controlling the menstrual cycle.

What is the hormone?
A  FSH
LH
oestrogen
D  progesterone

Answer/Explanation

Ans: C

Question

The graph shows the four hormones that control the menstrual cycle.
Which curve on the graph represents the hormone LH?

Answer/Explanation

Ans
C

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