Loading…
Loading…
GCSE Chemistry · key term
The process in which algae and plants use light energy to make glucose from carbon dioxide and water, releasing oxygen.
Used by AQA, Edexcel and OCR
Specification 4.9.1.3, 4.9.1.4 · Paper 2
The process in which algae and plants use light energy to convert carbon dioxide and water into glucose and oxygen.
Revise: Rise of OxygenThe oxygen in the atmosphere now was produced by living organisms: first algae, then plants. They released oxygen as a product of photosynthesis.
Specification 8.22 · Paper 2
The process in which photosynthetic organisms use light energy to make glucose from carbon dioxide and water, releasing oxygen.
Revise: Increase of OxygenThese organisms did not add oxygen merely by being alive. They carried out photosynthesis, a chemical process powered by light energy.
Specification C6.3b · Paper 2 (Foundation), Paper 4 (Higher)
The process by which algae and plants use light energy to make glucose from carbon dioxide and water, releasing oxygen.
Revise: Oxygen DevelopmentThe main source of the increase was photosynthesis. Early algae in water used light energy to make glucose from carbon dioxide and water.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The biological process in which green plants, algae and some bacteria use light energy to make glucose from carbon dioxide and water, releasing oxygen.
Revise: Development of oxygen-rich atmosphereSome early microorganisms developed photosynthesis; later, algae and plants also carried it out.
Explain the rise in atmospheric oxygen as a gradual build-up caused by photosynthesis, not a sudden change.
Link each fall in atmospheric carbon dioxide to a process: uptake by photosynthesis, dissolution in the oceans, or carbon becoming stored in rocks and fossil fuels.
When explaining fossil fuels, show how carbon first entered living organisms through photosynthesis before their remains were buried.
Create a free account to read GCSE Chemistry revision notes for your exam board and track your progress.