Question 1 · 1 mark · Difficulty 1/3
Respiration is the process by which cells release:
- oxygen
- carbon dioxide
- water
- energy
Show answer & explanation
✓ Answer: D — energy
Respiration releases energy from glucose.
CXC · CSEC · Integrated Science
Respiration and Gas Exchange
Practice Questions
90 CXC CSEC Integrated Science questions on Respiration and Gas Exchange, each with instant feedback and a full examiner-style mark scheme.
✨ Revision guide includes key terms, worked examples and exam technique for Respiration and Gas Exchange.
Try 2 sample questions on Respiration and Gas Exchange
Question 2 · 1 mark · Difficulty 1/3
Which structure prevents food from entering the trachea during swallowing?
- Bronchus
- Pharynx
- Larynx
- Epiglottis
Show answer & explanation
✓ Answer: D — Epiglottis
Award 1 mark for identifying the epiglottis as the flap-like structure that covers the trachea during swallowing. C is incorrect — the larynx is the voice box and does not close over the trachea. A is incorrect — the bronchus is a branch of the trachea within the lungs. B is incorrect — the pharynx is the throat region where air and food passages cross.
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20 questions · 25 min · free
CXC CSEC Integrated Science: Respiration and Gas Exchange FAQ
Is Kramizo free for CXC CSEC students preparing for Integrated Science?
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 and Gas Exchange practice with other Integrated Science 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 and Gas Exchange questions aligned to the official CXC CSEC Integrated Science syllabus?
Every question is written against the published CXC CSEC Integrated Science 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 and Gas Exchange typically tested on CXC CSEC Integrated Science papers?
Respiration and Gas Exchange appears across multiple question types on real CXC CSEC Integrated Science 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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