(a(i))[1]
Name the endocrine gland that secretes testosterone.
(a(ii))[1]
State why testosterone may enhance sporting performance.
(a(iii))[1]
Describe progesterone’s role in the menstrual cycle.
(a(iv))[1]
Name one additional hormone often present in oral contraceptives.
(b)[3]
Explain which water sample showed the highest hormone pollution before sewage treatment. Support your answer with data from Table 5.1.
(c(i))[2]
Describe the effect that chlorine had on hormone concentrations in the water. Support your answer with data from Table 5.1.
(c(ii))[1]
State the primary purpose of chlorine in sewage treatment.
(d)[6]
Describe the negative consequences of allowing untreated sewage to enter lake ecosystems.