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CXC · CSEC · Human and Social Biology

Transport and Circulation
Practice Questions

100 CXC CSEC Human and Social Biology questions on Transport and Circulation, 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 Transport and Circulation.

Try 2 sample questions on Transport and Circulation

Question 1 · 1 mark · Difficulty 1/3

Which blood group is known as the 'universal donor' in ABO blood typing?

  1. Blood group O
  2. Blood group AB
  3. Blood group A
  4. Blood group B
Show answer & explanation
✓ Answer: A — Blood group O
Blood group O red blood cells carry no A or B antigens, so they will not trigger agglutination when transfused into recipients of any ABO blood group, making O the universal donor. Blood group A has only A antigens, B has only B antigens, and AB has both, so all three can cause reactions in recipients who lack those antigens.
Question 2 · 1 mark · Difficulty 1/3

Which of the following correctly describes blood group AB?

  1. Has A and B antigens; has anti-A and anti-B antibodies
  2. Has A and B antigens; has no ABO antibodies in plasma
  3. Has no antigens; has anti-A and anti-B antibodies
  4. Has no antigens; has no ABO antibodies in plasma
Show answer & explanation
✓ Answer: B — Has A and B antigens; has no ABO antibodies in plasma
Blood group AB individuals have both A and B antigens on their red blood cells. Because the immune system does not produce antibodies against self-antigens, AB individuals produce neither anti-A nor anti-B antibodies, making them the universal recipients. Option A incorrectly assigns antibodies to AB; options B and D incorrectly state there are no antigens.
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20 questions · 25 min · free

CXC CSEC Human and Social Biology: Transport and Circulation FAQ

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 Transport and Circulation 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 Transport and Circulation 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 Transport and Circulation typically tested on CXC CSEC Human and Social Biology papers?
Transport and Circulation 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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