Gce Model Questions Vol1 2021 Biology Question 48
Practice objective / multiple choice question 48 from the 2021 Gce Model Questions Vol1 Biology examination.
In a 28‑day menstrual cycle, the length of the follicular phase (in days) varies linearly with the peak estrogen concentration. When the peak is \(150\ \text{pg mL}^{-1}\) the follicular phase lasts 12 days; when the peak is \(120\ \text{pg mL}^{-1}\) it lasts 14 days. Assuming a linear relationship, what is the day of the cycle on which ovulation occurs if the peak estrogen concentration is \(135\ \text{pg mL}^{-1}\)? (Ovulation occurs the day after the luteinising hormone surge, which coincides with the last day of the follicular phase.)
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This is Gce Model Questions Vol1 2021 Biology Question 48. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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