Upper secondary / K325 / 2027

G3 Pure Biology

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14 chapters / 109 lessons

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Cell structure and organisation

Recognise cell structures, explain their jobs and connect a specialised cell to its function.

6 lessons

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Movement of substances

Explain how substances enter and leave cells, and predict what happens when their surroundings change.

6 lessons

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Biological molecules

Connect food molecules to their roles, interpret food tests and explain how enzymes work.

7 lessons

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Nutrition in humans

Follow food through digestion, absorption and assimilation, and explain the work of the intestine and liver.

7 lessons

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Transport in humans

Trace blood through the body and explain how vessels, blood and the heart keep cells supplied.

9 lessons

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Respiration in humans

Connect breathing and gas exchange to energy release in cells, including exercise and recovery.

6 lessons

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Excretion in humans

Follow waste from cells to the outside, and explain how kidneys filter blood while retaining useful substances.

5 lessons

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Homeostasis and response

Trace how the body detects a change, corrects it and coordinates a response. Then use the same cause-and-effect thinking to explain the eye.

10 lessons

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Infectious diseases

Separate the pathogen from the disease, trace how it spreads, and explain how vaccines and antibiotics act differently.

6 lessons

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Nutrition and transport in plants

Follow carbon dioxide, water and sugars through a plant. Use leaf structure and practical evidence to explain photosynthesis, transpiration and translocation.

10 lessons

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Organisms and their environment

Follow energy and carbon through ecosystems, explain pollution and assess ways to protect biodiversity.

9 lessons

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Molecular genetics

Connect DNA to genes and proteins, then explain gene transfer and evaluate genetic engineering.

6 lessons

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Reproduction

Connect cell division to reproduction, then follow gametes in flowers and humans from formation to fertilisation.

12 lessons

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Inheritance

Read genetic diagrams, predict offspring probabilities and explain how inherited variation can change a population over generations.

10 lessons

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