Biology 9700 · AS & A Level · Control and coordination in mammals

Control and coordination in mammals — practice question

Fig. 6.1 illustrates the concentrations of two hormones, oestrogen and progesterone, in a woman’s blood over one menstrual cycle.
(a(i))[1]

Using Fig. 6.1, state the letter of the stage in the cycle when ovulation takes place.

(a(ii))[1]

State how Fig. 6.1 shows that the woman did not become pregnant in this cycle.

(a(iii))[1]

Name the ovarian structure that releases progesterone after ovulation.

(a(iv))[1]

State the function of progesterone during stage D.

(b)[4]

The combined contraceptive pill contains oestrogen and progesterone. Explain how this combined contraceptive pill functions to prevent pregnancy.

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