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CXC · CSEC · Biology

Disease and Immunity
Practice Questions

120 CXC CSEC Biology questions on Disease and Immunity, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Disease and Immunity.

Try 2 sample questions on Disease and Immunity

Question 1 · 1 mark · Difficulty 1/3

The Aedes aegypti mosquito is responsible for transmitting several diseases in the Caribbean. Which of the following diseases is NOT transmitted by this mosquito?

  1. Dengue fever
  2. Chikungunya
  3. Tuberculosis
  4. Zika virus
Show answer & explanation
✓ Answer: CTuberculosis
Award 1 mark for identifying tuberculosis as not transmitted by Aedes aegypti. A is incorrect — dengue fever is transmitted by Aedes aegypti. B is incorrect — chikungunya is transmitted by Aedes aegypti. D is incorrect — Zika virus is transmitted by Aedes aegypti. Tuberculosis is caused by the bacterium Mycobacterium tuberculosis and is spread through airborne droplets.
Question 2 · 1 mark · Difficulty 1/3

Which of the following BEST describes the term 'vaccination'?

  1. The injection of antibiotics to kill harmful bacteria
  2. The natural recovery from an infectious disease
  3. The introduction of weakened or killed pathogens to stimulate immunity
  4. The transfer of antibodies from mother to baby through breast milk
Show answer & explanation
✓ Answer: CThe introduction of weakened or killed pathogens to stimulate immunity
Award 1 mark for identifying vaccination as the introduction of weakened or killed pathogens (antigens) to stimulate the immune system to produce antibodies. D is incorrect — this describes passive natural immunity. A is incorrect — antibiotics treat bacterial infections but do not provide immunity. B is incorrect — this describes natural active immunity, not vaccination.
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20 questions · 25 min · free

CXC CSEC Biology: Disease and Immunity FAQ

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 Disease and Immunity 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 Disease and Immunity 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 Disease and Immunity typically tested on CXC CSEC Biology papers?
Disease and Immunity 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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