During an IVF assessment, a clinician measures the development of follicles in a patient's ovaries. Analysis shows the total volume of all developing follicles combined is 25,000 mm325,000\text{ mm}^325,000 mm3. The mean diameter of these follicles is 20 mm20\text{ mm}20 mm. Calculate the number of follicles 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.