Skip to content
MathsGenie logo
Open app

Course home

  1. IGCSE
  2. Biology Edexcel
  3. Question bank

Excretion

EasyMediumHard
123456789101112131415
Question 5

A dialysis machine (artificial kidney) is used to treat patients with kidney failure.

a.

Explain why it is important that the dialysis fluid contains a concentration of glucose equal to the normal blood glucose concentration.

[2]
b.

Describe how urea is removed from the patient's blood into the dialysis fluid, referencing the mechanism and the structure of the tubing.

[3]
c.

Dynamic biological processes in the human kidney are highly specialized. Describe two processes that occur in a real nephron but do not take place in a dialysis machine. For each, state the name of the process and describe how it works.

[4]
d.

When a recipient undergoes a kidney transplant, the donor kidney must be connected to their existing systems. Name the two primary blood vessels and the excretory tube that are connected to the donor kidney.

[3]

Excretion Questions

  1. IGCSE
  2. /Biology
  3. /Excretion