A clinic audits treatments given to people with kidney failure.
The clinic makes this claim:
‘A kidney transplant is always a better treatment than dialysis.’
The table shows information from the audit.
| Treatment | Time before treatment can start | Scheduled procedures and appointments during the first year after treatment starts | Outcome |
|---|---|---|---|
| Dialysis | Within 1 week | Three sessions each week; each session lasts 4 hours | Dialysis continues regularly |
| Kidney transplant | An average of 14 months while waiting for a donor kidney | 40 hours in total | 8 of 80 people returned to dialysis within one year because the transplanted kidney was rejected |
For the kidney transplant, the 40 hours does not include time spent in hospital recovering after the operation.
Calculate the scheduled treatment time for dialysis during the first year.
Give your answer in hours.
Evaluate the clinic's claim.
Use your answer to part (a) and the information in the table.
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.