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HomeCXC CSEC Human and Social BiologyThe human urinary system: structure and functions of the kidney
CXC · CSEC · Human and Social Biology

The human urinary system: structure and functions of the kidney
Practice Questions

20 CXC CSEC Human and Social Biology questions on The human urinary system: structure and functions of the kidney, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on The human urinary system: structure and functions of the kidney

Question 1 · 1 mark · Difficulty 1/3

Which structure in the kidney is responsible for filtering blood to form the initial filtrate?

  1. Loop of Henle
  2. Glomerulus
  3. Collecting duct
  4. Distal convoluted tubule
Show answer & explanation
✓ Answer: BGlomerulus
Award 1 mark for identifying the glomerulus as the site of ultrafiltration. A is incorrect — the loop of Henle is involved in water reabsorption. C is incorrect — the collecting duct collects urine from nephrons. D is incorrect — the distal convoluted tubule is involved in selective reabsorption and secretion.
Question 2 · 1 mark · Difficulty 1/3

A patient in a Trinidad hospital is diagnosed with kidney failure. The doctor explains that one function of the kidneys has stopped. Which of the following is NOT a function of the kidney?

  1. Removal of urea from the blood
  2. Regulation of water content in the body
  3. Production of digestive enzymes
  4. Maintenance of blood pH
Show answer & explanation
✓ Answer: CProduction of digestive enzymes
Award 1 mark for recognising that digestive enzyme production occurs in the pancreas and stomach, not the kidneys. A is incorrect — excretion of urea is a key kidney function. B is incorrect — osmoregulation is performed by the kidneys. D is incorrect — kidneys help maintain blood pH by excreting hydrogen ions.
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CXC CSEC Human and Social Biology: The human urinary system: structure and functions of the kidney FAQ

How many CXC CSEC Human and Social Biology questions on The human urinary system: structure and functions of the kidney are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on The human urinary system: structure and functions of the kidney for CXC CSEC Human and Social Biology, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Human and Social Biology?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix The human urinary system: structure and functions of the kidney practice with other Human and Social Biology topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the The human urinary system: structure and functions of the kidney questions aligned to the official CXC CSEC Human and Social Biology syllabus?
Every question is written against the published CXC CSEC Human and Social Biology specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is The human urinary system: structure and functions of the kidney typically tested on CXC CSEC Human and Social Biology papers?
The human urinary system: structure and functions of the kidney appears across multiple question types on real CXC CSEC Human and Social Biology papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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