A laboratory audits an IVF treatment record. The stages have been entered in the order shown.
| Entry | Stage recorded |
|---|---|
| 1 | Eggs are collected from the ovaries. |
| 2 | FSH and LH are given so that several eggs mature. |
| 3 | Eggs are fertilised with sperm in the laboratory. |
| 4 | Fertilised eggs develop into embryos. |
| 5 | One or two embryos are inserted into the uterus. |
What is wrong with the order shown in the treatment record?
Hormone treatment is shown after egg collection.
Embryo development is shown after laboratory fertilisation.
Laboratory fertilisation is shown after egg collection.
Embryo insertion is shown after embryo development.
85 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.