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Edexcel
4BI1
2017 specification
Paper 2B
Paper 2B
Paper 2 (all content)
The nature and variety of living organisms
Characteristics and classification · Microorganisms and viruses
2 subtopic lessons
Structure and functions in living organisms
Cell structure · Diffusion and osmosis · Biological molecules and food tests · Enzyme action · Photosynthesis · Heart and circulation · Disease and immunity · Aerobic and anaerobic respiration · Kidneys and excretion · Nervous system and the eye · Breathing and gas exchange · Xylem, phloem and water uptake · Diet · Transpiration and translocation · Blood vessels and blood · Leaf structure and mineral ions · Hormones and homeostasis · Digestion and absorption · Active transport and surface area · Specialised cells and magnification · Tropisms
21 subtopic lessons
Reproduction and inheritance
Reproduction in plants · Chromosomes and cell division · Human reproduction · Monohybrid inheritance · Variation, mutation and selection
5 subtopic lessons
Ecology and the environment
Food chains and energy flow · Nutrient cycles · Pollution and conservation · Populations and sampling
4 subtopic lessons
Use of biological resources
Food production · Biotechnology and fermenters · Genetic modification
3 subtopic lessons
Practical skills
Experimental skills are assessed within both written papers
Practical skills in biology
1 subtopic lessons