Excretion in Humans
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Structure and function of kidneys
SubtopicStructure and function of kidneys under Excretion in Humans for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
What is the function of the renal artery in the human excretory system?
A.To transport oxygenated blood containing metabolic waste to the kidney
B.To carry filtered deoxygenated blood away from the kidney
C.To transport urine from the kidney to the bladder
D.To secrete hormones that regulate blood pressure
- 2.
In the following flowchart representing the urinary system, which label represents the tube responsible for carrying urine from the kidney to the bladder?
A.A
B.B
C.C
D.D
- 3.
Which of the following identifies the correct sequence of structures through which urine passes after it is formed in the kidney?
A.Bladder → Urethra → Ureter
B.Urethra → Bladder → Ureter
C.Ureter → Bladder → Urethra
D.Ureter → Urethra → Bladder
Download the worksheet for Excretion in Humans - Structure and function of kidneys to practice offline. It includes additional chapter-level practice questions.
Urea formation and dialysis
SubtopicUrea formation and dialysis under Excretion in Humans for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
What type of membrane is used in a dialysis machine to separate the blood from the dialysis fluid?
A.Fully permeable membrane
B.Impermeable membrane
C.Partially permeable membrane
D.Thick muscular membrane
- 2.
What is the primary process by which urea moves from the blood into the dialysis fluid during treatment?
A.Active transport
B.Osmosis
C.Diffusion
D.Phagocytosis
- 3.
Which substance is broken down to form urea?
A.Excess amino acids
B.Excess glucose
C.Excess fatty acids
D.Excess glycogen
Download the worksheet for Excretion in Humans - Urea formation and dialysis to practice offline. It includes additional chapter-level practice questions.