Biology Learning Path
High School (9–10) Biology
Explore structured biology courses, solved problems, simulations and Python activities.
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Health and Disease
StemPy LabWhat it means to be healthy, for a person and for a community. Acute and chronic disease, the immediate and contributory causes of illness, and infectious against non-infectious disease.
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Infectious Diseases and Immunity
The microbes that cause disease and how they spread. How an infection affects the body, the principles of treatment and of prevention, and how vaccines and a healthy community keep disease away.
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Improvement in Crop Yields
How a crop variety is improved, and how nutrients, irrigation and cropping patterns raise the yield. Then protecting a crop from weeds, pests and disease, and storing the grain.
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Animal Husbandry
Raising cattle for milk and draught, poultry for eggs and meat, and fish from the sea and from ponds. Then bee-keeping, and the care that each of these needs.
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Our Impact on the Environment
How human activities change the environment: the ozone layer and its depletion, biodegradable and non-biodegradable waste, and how we can manage our garbage.
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Ecosystems and Food Chains
What an ecosystem is, its living and non-living parts, producers, consumers and decomposers, food chains and webs, trophic levels, the ten per cent law and biological magnification.
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Variation and Mendel's Experiments
Why offspring differ from their parents, and how Mendel's pea plants revealed dominant and recessive traits, the 3:1 ratio and the 9:3:3:1 ratio.
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How Traits Are Expressed, and Sex Determination
How a gene makes a protein that shows as a trait, how genes sit on chromosomes and pass on, and how the sex of a child is decided.
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Reproduction in Human Beings
The changes of puberty, the male and female reproductive systems, fertilisation and the growth of the embryo, and how people look after their reproductive health.
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Reproduction in Simple Organisms and Plants
Why the copying of DNA is never perfect, and why that matters. Fission, budding, fragmentation, regeneration, spores and vegetative propagation, then sexual reproduction in flowering plants.
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Coordination in Plants and Hormones in Animals
Plants respond to light, gravity, water and touch, and their hormones control growth. In animals, glands release hormones that control growth, sugar and the body's response to danger.
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The Nervous System
Follow a message along a nerve cell and across a synapse. See why a reflex is so fast, and what the forebrain, midbrain, hindbrain and spinal cord each do.
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