A person with kidney failure receives dialysis three times each week. After a successful kidney transplant, the person no longer needs these sessions.
Which comparison explains this change?
the donated kidney stops urea production; dialysis stops it intermittently
the donated kidney produces insulin; dialysis produces insulin intermittently
the donated kidney filters continuously; dialysis removes wastes intermittently
the donated kidney stores urine; dialysis stores urine intermittently
45 exam-style questions on Edexcel GCSE Biology 7.4 Blood glucose and the urinary system, covering 7.4.1 Insulin and blood glucose control, 7.4.2 Glucagon and blood glucose regulation, 7.4.3 Type 1 and type 2 diabetes, 7.4.4 Structure of the urinary system, 7.4.5 Structure and function of the nephron, 7.4.6 ADH and water regulation, 7.4.7 Treatments for kidney failure, and 7.4.8 Production of urea in the liver. Each one has a worked solution and a mark scheme showing where the marks go.