As part of a fertility drug treatment plan to treat infertility, a patient is prescribed FSH and LH to stimulate follicle development. During an ultrasound scan to monitor the response to these hormones, a clinician measures the combined volume of all developing follicles in the patient's ovaries to be 21,500 mm321,500\text{ mm}^321,500 mm3. The mean diameter of these stimulated follicles is recorded as 14 mm14\text{ mm}14 mm.
Calculate the estimated number of follicles present in the patient's ovaries. Assume each follicle is a sphere where Volume of a sphere=43πr3\text{Volume of a sphere} = \frac{4}{3}\pi r^3Volume of a sphere=34πr3, rrr is the radius, and π=3.14\pi = 3.14π=3.14. Give your answer to the nearest whole number.
62 exam-style questions on AQA GCSE Biology 5.3 Hormonal coordination in humans, covering 5.3.1 Human endocrine system, 5.3.2 Control of blood glucose concentration, 5.3.3 Maintaining water and nitrogen balance in the body, 5.3.4 Hormones in human reproduction, 5.3.5 Contraception, 5.3.6 The use of hormones to treat infertility (HT only), and 5.3.7 Negative feedback (HT only). Each one has a worked solution and a mark scheme showing where the marks go.