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Pearson Edexcel International GCSE Human Biology (4HB1)

Human Biology revision

12 topics. Pick any one to be tested on it, taught it, or to talk it through. This is the course list Zen IQ works from: its tutor, papers and marking all follow it.

Topics

  1. Cells and tissuesHuman cell structure, organelles and their functions, specialised cells, tissues, organs and organ systems, stem cells
  2. Biological moleculesCarbohydrates, proteins and lipids, food tests, enzymes and the factors that affect them
  3. Movement of substances in and out of cellsDiffusion, osmosis and active transport, surface area to volume ratio
  4. Bones, muscles and jointsThe skeleton, types of joint, antagonistic muscles and movement
  5. CoordinationThe nervous system, neurones, reflex arcs, the eye, the brain, hormones and the endocrine system
  6. Nutrition and energyA balanced diet, the alimentary canal, digestion and absorption, energy from food
  7. RespirationAerobic and anaerobic respiration, oxygen debt
  8. Gas exchangeThe breathing system, alveoli, ventilation, the effects of smoking
  9. Internal transportBlood and its components, the heart, blood vessels, circulation, the lymphatic system
  10. Homeostatic mechanismsControl of body temperature and blood glucose, the kidney and water balance
  11. Reproduction and heredityThe human reproductive systems, the menstrual cycle, pregnancy, DNA, genes, inheritance and mutation
  12. DiseasePathogens and how they spread, the immune system, vaccination, antibiotics, non-communicable disease

How Zen IQ helps with Human Biology

Exam papers, marked like an examiner

Papers written in the Edexcel style for Human Biology, with a mark scheme, marked part by part, crediting an error carried forward the way a real examiner does.

Your weak spot map

Every topic below turns strong, shaky or weak from your marks and flashcards, so you can see where marks are going. A target test aims straight at the weakest.

Call a tutor

Talk a topic through out loud with Zehan or Maya. They answer in a second, you can cut in, and they write it on a board as they explain.

Video lessons and mind maps

Any topic taught in about four minutes as an animated lesson, or drawn as a mind map where every idea leads to a lesson, a quiz or a call.

Flashcards and study guides

Cards that come back just before you would forget them, and study guides in three lengths, ready to print or download for Word.

Revise Human Biology in Zen IQFree to try, no download: it runs in your browser and installs like an app.
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