Excretion in humans — IGCSE Biology (0610) questions by topic
Excretion in humans questions pin down which single organ removes urea from the body, locate the urethra on a labelled excretory system diagram, and work out how three sampled body fluids differ in content as they pass through a kidney nephron and its blood vessels.
Identify, state, describe, explain and outline lead 30 real questions worth 1 to 18 marks from 2023 to 2025 papers. Because fluid-composition questions along the nephron depend on knowing exactly what is filtered, reabsorbed or retained at each labelled point, submitting a worked comparison for instant marking flags precisely which stage has been misunderstood.
May–June 2025, Paper 11
Which organ excretes urea? A bladder B kidney C lung D stomach
Answer this question and get it marked →May–June 2025, Paper 12
The diagram shows some of the organs involved in excretion. Four structures are labelled: A and B point to the two tube-like vessels at the top running down from near the kidneys,…
Answer this question and get it marked →May–June 2025, Paper 13
The diagram shows a human organ system. The diagram shows the urinary system: two kidneys at the top, connected by tubes to the bladder, which leads to a tube exiting the body at…
Answer this question and get it marked →May–June 2025, Paper 21
What is a role of the glomerulus? A assembling amino acids into proteins B filtration of water, glucose, urea and ions from the blood C reabsorption of glucose, ions and water…
Answer this question and get it marked →May–June 2025, Paper 22
Which organ produces urea? A bladder B kidney C liver D pancreas
Answer this question and get it marked →May–June 2025, Paper 23
What is filtered out of the blood in the glomerulus and into the nephron? glucose urea --- --- --- A yes yes B yes no C no yes D no no
Answer this question and get it marked →What can be broken down to form urea? A amino acids B fatty acids C sugars D vitamins
Answer this question and get it marked →May–June 2025, Paper 41
The kidney is an organ in the excretory system. Describe what is meant by the term excretion.
Answer this question and get it marked →October–November 2024, Paper 11
Which organ excretes urea? A bladder B kidney C liver D lung
Answer this question and get it marked →October–November 2024, Paper 21
Where is urea formed and excreted? (columns: formed; excreted) A bladder; heart B heart; liver C kidney; bladder D liver; kidney
Answer this question and get it marked →October–November 2024, Paper 22
Which part of an amino acid is removed during deamination? A the carbon-containing part B the nitrogen-containing part C the oxygen-containing part D the iron-containing part
Answer this question and get it marked →Which process happens in a glomerulus in the kidney? A assimilation B deamination C filtration D reabsorption
Answer this question and get it marked →October–November 2024, Paper 23
In a kidney nephron, which substances are filtered out of the blood in the glomerulus? A glucose, protein, ions and water B glucose, protein, urea and water C glucose, ions, urea…
Answer this question and get it marked →October–November 2024, Paper 42
Fig. 3.1 shows a kidney nephron and its associated blood vessels, with the glomerulus labelled and fluids A, B and C labelled at different points (the direction of flow is shown).…
Answer this question and get it marked →May–June 2023, Paper 11
Which part of the body excretes urea, excess water and excess ions? A gall bladder B heart C kidney D lungs
Answer this question and get it marked →The diagram shows the kidneys and associated organs, with four structures labelled A, B, C and D. Which label is the ureter? A B C D
Answer this question and get it marked →May–June 2023, Paper 12
The diagram shows the human body and some of its organs, with four structures labelled A, B, C and D. Which structure removes urea from the blood? A B C D
Answer this question and get it marked →May–June 2023, Paper 13
The diagram of the excretory system has four parts labelled A, B, C and D. Which part of the diagram of the excretory system is the urethra? A B C D
Answer this question and get it marked →May–June 2023, Paper 21
Which row shows where glucose will be found in the body of a healthy human after eating a meal? Columns: renal artery; renal vein; glomerulus; nephron; ureter (yes/no). A yes; no;…
Answer this question and get it marked →May–June 2023, Paper 22
The diagram shows a cross-section of a kidney with three structures labelled P, Q and R. What are the correct names for structures P, Q and R? Columns: P; Q; R. A urethra; cortex;…
Answer this question and get it marked →May–June 2023, Paper 23
What is the name of the process that produces urea and the organ where urea is formed? Columns: process producing urea; organ where urea is formed. A deamination; kidney B…
Answer this question and get it marked →May–June 2023, Paper 31
Fig. 7.1 is a diagram showing some of the organs in the human body (labelled A–F, not to scale). Table 7.1 shows the names of some organs, the identifying letters and their…
Answer this question and get it marked →May–June 2023, Paper 43
Urea is a waste product. Describe how urea is formed.
Answer this question and get it marked →October–November 2023, Paper 11
The diagram shows the human excretory system with four structures labelled A, B, C and D. Which labelled structure is the urethra? A B C D
Answer this question and get it marked →October–November 2023, Paper 12
Which row shows an organ and the substance it excretes? Columns: organ; substance excreted. A bladder; water B kidney; ions C lung; oxygen D urethra; urea
Answer this question and get it marked →October–November 2023, Paper 13
The diagram shows parts of the body involved in excretion in humans, labelled W, X, Y and Z. What are the labelled parts? Columns: W; X; Y; Z. A bladder; ureter; kidney; urethra B…
Answer this question and get it marked →October–November 2023, Paper 21
The diagram shows the human excretory system with four structures labelled A, B, C and D. Which labelled structure is the urethra? A B C D
Answer this question and get it marked →October–November 2023, Paper 22
Which row shows an organ and the substance it excretes? Columns: organ; substance excreted. A bladder; water B kidney; ions C lung; oxygen D urethra; urea
Answer this question and get it marked →October–November 2023, Paper 23
The table shows the relative concentrations of urea in the blood entering and leaving the kidneys and liver. Which row is correct? Columns: highest concentration of urea in the…
Answer this question and get it marked →The diagram shows parts of the body involved in excretion in humans, labelled W, X, Y and Z. What are the labelled parts? Columns: W; X; Y; Z. A bladder; ureter; kidney; urethra B…
Answer this question and get it marked →Other IGCSE Biology topics
- Organisms and their environment (126)
- Human nutrition (95)
- Characteristics and classification of living organisms (84)
- Coordination and response (83)
- Reproduction (82)
- Inheritance (74)
- Organisation of the organism (cells) (64)
- Plant nutrition (62)
- Transport in animals (62)
- Transport in plants (59)
- Movement into and out of cells (57)
- Variation and selection (50)