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CXC · CSEC · Biology

Respiration
Practice Questions

11 CXC CSEC Biology questions on Respiration, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Respiration

Question 1 · 1 mark · Difficulty 1/3

Which word equation correctly summarises aerobic respiration?

  1. Glucose + water → carbon dioxide + ethanol
  2. Carbon dioxide + water → glucose + oxygen
  3. Glucose → carbon dioxide + ethanol
  4. Glucose + oxygen → carbon dioxide + water
Show answer & explanation
✓ Answer: DGlucose + oxygen → carbon dioxide + water
Aerobic respiration oxidises glucose using oxygen to produce carbon dioxide and water, releasing energy. Option B is anaerobic respiration in yeast. Option C is photosynthesis. Option D incorrectly combines water with glucose and produces ethanol, which is not aerobic respiration.
Question 2 · 1 mark · Difficulty 1/3

In which part of the cell does anaerobic respiration occur?

  1. Nucleus
  2. Chloroplast
  3. Cytoplasm
  4. Mitochondrion
Show answer & explanation
✓ Answer: CCytoplasm
Anaerobic respiration takes place in the cytoplasm of the cell, as it does not require the specialised membrane systems of the mitochondria. The nucleus stores genetic information. Chloroplasts carry out photosynthesis. Mitochondria are the site of aerobic respiration, not anaerobic.
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CXC CSEC Biology: Respiration FAQ

How many CXC CSEC Biology questions on Respiration are there on Kramizo?
Kramizo currently has 11 exam-board-aligned practice questions on Respiration for CXC CSEC 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 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 Respiration practice with other 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 Respiration questions aligned to the official CXC CSEC Biology syllabus?
Every question is written against the published CXC CSEC 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 Respiration typically tested on CXC CSEC Biology papers?
Respiration appears across multiple question types on real CXC CSEC 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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