Pearson Edexcel International GCSE Biology (4BI1)
Biology revision
6 topics across two units. 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.
Unit 1 4WBI1
- Nature and variety of living organismsCharacteristics of life; plants/animals/fungi/protoctists/bacteria; pathogens and viruses
- Structure and functions Part 1Levels of organisation; cell structure and function; biological molecules (carbs/proteins/lipids, enzymes); movement of substances (diffusion/osmosis/active transport); nutrition (photosynthesis, human digestion); respiration (aerobic/anaerobic, ATP); gas exchange (leaf structure, human thorax, smoking)
Unit 2 4WBI2
- Structure and functions Part 2Transport (phloem/xylem, blood, heart, circulation); excretion (kidney, nephron); co-ordination and response (homeostasis, nervous/hormonal systems, eye, reflex arc, hormones)
- Reproduction and inheritanceSexual/asexual reproduction; flower structure; human reproductive systems; menstrual cycle; DNA/genes/chromosomes; monohybrid inheritance; mitosis/meiosis; variation and mutation; Darwin's natural selection; antibiotic resistance
- Ecology and environmentPopulation/community/habitat/ecosystem; food chains/webs/pyramids; carbon and nitrogen cycles; pollution; greenhouse effect; eutrophication; deforestation
- Use of biological resourcesCrop yield methods; yeast/bacteria in food production; fermenters; selective breeding; genetic engineering (restriction enzymes, plasmids, GM); cloning (micropropagation, Dolly the sheep)
How Zen IQ helps with Biology
Papers written in the Edexcel style for Biology, with a mark scheme, marked part by part, crediting an error carried forward the way a real examiner does.
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.
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.
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.
Cards that come back just before you would forget them, and study guides in three lengths, ready to print or download for Word.
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