AQA GCSE Biology · 8461
Specification 4.4.1.3 · Paper 1
Revise: Glucose UtilizationPlants must also absorb nitrate ions from the soil, usually through their roots.
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GCSE Biology · key term
A nitrogen-containing ion absorbed from the soil and needed by plants to produce amino acids and then proteins.
Used by AQA and OCR
Specification 4.4.1.3 · Paper 1
Revise: Glucose UtilizationPlants must also absorb nitrate ions from the soil, usually through their roots.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
An ion absorbed by producers as a source of nitrogen for making amino acids and proteins.
Revise: Transport of SubstancesNitrate ions supply nitrogen, which the plant needs to make amino acids and proteins; magnesium ions are needed to make chlorophyll. Nitrate ions do not simply diffuse through the cell membrane like the gases: their uptake can require energy through active transport. The detailed mechanisms of osmosis and active transport are considered in the next lesson.
When explaining amino acid production, state that the plant also needs nitrate ions absorbed from the soil. Glucose alone is not sufficient.
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