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CXC · CSEC · Human and Social Biology

Free CXC CSEC Human and Social Biology
Practice Paper

8 mixed-difficulty practice questions in the style of real CXC CSEC papers — answers, mark-scheme-style explanations, and the official exam structure all on one page.

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What the real CXC CSEC Human and Social Biology paper looks like

Paper 1 (Section A)
60 multiple-choice questions, 1 mark each. 75 minutes. Tests knowledge across the whole syllabus.
Paper 2
Structured short-answer + 1 extended response question. Section A is compulsory; Section B has a choice. Approximately 2 hours 10 minutes.
School-Based Assessment (SBA)
Coursework component graded by the teacher, externally moderated. Worth ~20-30% of the final grade depending on subject.
Total exam time: ~3.5 hours across Paper 1 and Paper 2 sittings.
Grading: Grades: I (highest) to VI (lowest). A grade of III or above is typically required for further study.

Mini practice paper: 8 questions

Mixed-difficulty questions from across the Human and Social Biology syllabus. Tap "Show answer" after each to check yourself.

Q1 · Difficulty 1/3

What is an ecosystem?

  1. A group of the same species
  2. A community of organisms interacting with each other and their physical environment
  3. A food chain
  4. A habitat
Show answer & explanation
✓ Answer: B — A community of organisms interacting with each other and their physical environment
An ecosystem includes all the biotic (living) and abiotic (non-living) factors in a particular area and all their interactions.
Q2 · Difficulty 1/3

What is the role of producers in an ecosystem?

  1. They consume other organisms
  2. They make their own food through photosynthesis and form the base of food chains
  3. They decompose dead matter
  4. They only provide shelter
Show answer & explanation
✓ Answer: B — They make their own food through photosynthesis and form the base of food chains
Producers (green plants, algae) convert light energy into chemical energy through photosynthesis. They are the foundation of all food chains and webs.
Q3 · Difficulty 1/3

What is the difference between biotic and abiotic factors?

  1. They are the same
  2. Biotic factors are living; abiotic factors are non-living
  3. Abiotic factors are living; biotic factors are non-living
  4. Both are non-living
Show answer & explanation
✓ Answer: B — Biotic factors are living; abiotic factors are non-living
Biotic factors include all living organisms (plants, animals, bacteria). Abiotic factors include non-living elements like temperature, rainfall, soil pH, light intensity.
Q4 · Difficulty 1/3

What is the difference between arteries and veins?

  1. There is no difference
  2. Arteries carry blood away from the heart with thick walls; veins carry blood back with valves
  3. Veins carry blood away from the heart
  4. Arteries have valves; veins have thick walls
Show answer & explanation
✓ Answer: B — Arteries carry blood away from the heart with thick walls; veins carry blood back with valves
Arteries carry blood away from the heart under high pressure (thick muscular walls). Veins carry blood back to the heart at low pressure (thinner walls, with valves to prevent backflow).
Q5 · Difficulty 1/3

What is a gene?

  1. A whole chromosome
  2. A section of DNA that codes for a specific protein or characteristic
  3. A type of cell
  4. An amino acid
Show answer & explanation
✓ Answer: B — A section of DNA that codes for a specific protein or characteristic
A gene is a short section of DNA on a chromosome that contains the instructions (code) for making a specific protein, which determines a particular characteristic.
Q6 · Difficulty 1/3

What is a population?

  1. All organisms in an ecosystem
  2. A group of organisms of the same species living in the same area at the same time
  3. A single organism
  4. A food web
Show answer & explanation
✓ Answer: B — A group of organisms of the same species living in the same area at the same time
A population is a group of individuals of the same species occupying a particular area at a particular time. Example: all the iguanas on a Caribbean island.
Q7 · Difficulty 1/3

What are the levels of organisation in living organisms?

  1. Atom → molecule → organ → tissue
  2. Cell → tissue → organ → organ system → organism
  3. Organ → tissue → cell → organism
  4. Organism → organ → tissue → cell
Show answer & explanation
✓ Answer: B — Cell → tissue → organ → organ system → organism
Cells with similar functions group into tissues, tissues form organs, organs form organ systems, and systems make up the whole organism.
Q8 · Difficulty 1/3

What is the function of red blood cells?

  1. Fight infection
  2. Transport oxygen from the lungs to the body using haemoglobin
  3. Clot blood
  4. Produce antibodies
Show answer & explanation
✓ Answer: B — Transport oxygen from the lungs to the body using haemoglobin
Red blood cells contain haemoglobin, which binds to oxygen in the lungs (forming oxyhaemoglobin) and releases it at the tissues.
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CXC CSEC Human and Social Biology FAQ

What does the CXC CSEC Human and Social Biology exam look like?
The CXC CSEC Human and Social Biology exam is structured across 3 components. Paper 1 (Section A): 60 multiple-choice questions, 1 mark each. 75 minutes. Tests knowledge across the whole syllabus. Paper 2: Structured short-answer + 1 extended response question. Section A is compulsory; Section B has a choice. Approximately 2 hours 10 minutes. School-Based Assessment (SBA): Coursework component graded by the teacher, externally moderated. Worth ~20-30% of the final grade depending on subject. Total exam time: ~3.5 hours across Paper 1 and Paper 2 sittings.
Can I download a free CXC CSEC Human and Social Biology past paper?
Real CXC past papers are published directly by CXC on their official website. Kramizo doesn't redistribute copyrighted past papers, but we do generate free AI-written practice papers in the exact same style — same command words, same difficulty tier, same mark conventions. Use this practice paper as warm-up, then time yourself on official past papers before exam day.
How is CXC CSEC Human and Social Biology graded?
Grades: I (highest) to VI (lowest). A grade of III or above is typically required for further study. Kramizo's practice questions are tagged with difficulty 1-3 mapping roughly to the lower, middle, and top grade boundaries you'll encounter in the real exam.