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CXC CAPE · · Biology

Biological molecules and water
Practice Questions

40 CXC CAPE Biology questions on Biological molecules and water, 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 Biological molecules and water.

Try 2 sample questions on Biological molecules and water

Question 1 · 1 mark · Difficulty 1/3

Which element is present in all proteins but absent from carbohydrates and lipids?

  1. Nitrogen
  2. Carbon
  3. Hydrogen
  4. Oxygen
Show answer & explanation
✓ Answer: ANitrogen
Award 1 mark. It is carried in the amino group of every amino acid, which is why nitrate ions are needed to build proteins.
Question 2 · 1 mark · Difficulty 1/3

Which bond joins glycerol to a fatty acid in a triglyceride?

  1. A glycosidic bond
  2. An ester bond
  3. A peptide bond
  4. A hydrogen bond
Show answer & explanation
✓ Answer: BAn ester bond
Award 1 mark. Three form in each triglyceride, one to each fatty acid, and three molecules of water are released.
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20 questions · 25 min · free

CXC CAPE Biology: Biological molecules and water FAQ

Is Kramizo free for CXC CAPE 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 Biological molecules and water practice with other Biology topics or even switch to a totally different CXC CAPE 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 Biological molecules and water questions aligned to the official CXC CAPE Biology syllabus?
Every question is written against the published CXC CAPE 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 CAPE 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 CAPE.
How is Biological molecules and water typically tested on CXC CAPE Biology papers?
Biological molecules and water appears across multiple question types on real CXC CAPE 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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