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GCSE Biology · key term
A sub-cellular structure containing chlorophyll, where photosynthesis takes place.
Used by AQA, Edexcel and OCR
Specification 4.1.1.2, 4.4.1.1 · Paper 1
A plant-cell structure containing chlorophyll where photosynthesis takes place.
Revise: Animal and Plant Cell StructurePlant cells have the structures described above, but they often also have chloroplasts and a permanent vacuole. Plant and algal cells also have a cellulose cell wall.
A subcellular structure in plant cells where photosynthesis takes place.
Use qualifying words accurately: most animal cells contain the listed structures, and plant cells often contain chloroplasts and a permanent vacuole. A plant cell that does not photosynthesise may lack chloroplasts.
Remember that plant cells contain mitochondria as well as chloroplasts: they both respire and, in photosynthetic tissues, photosynthesise.
For an explanation of why photosynthesis is endothermic, state both the direction of energy transfer and its route: energy is transferred from the environment to chloroplasts by light.
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Specification 1.1 · Paper 1, Paper 2
A structure containing chlorophyll where photosynthesis occurs.
Revise: Sub-Cellular StructuresChloroplasts contain the green pigment chlorophyll, which absorbs light energy for photosynthesis. Photosynthesis produces glucose, storing energy in a chemical form the plant can use. Cells exposed to light, such as many leaf cells, contain numerous chloroplasts.
Specification B1.1b, B1.4b · Paper 1 (Foundation), Paper 3 (Higher)
Revise: Sub-cellular structuresPhotosynthesising plant cells also have chloroplasts. Chloroplasts contain chlorophyll, which absorbs light energy for photosynthesis. A green leaf cell may need many chloroplasts to capture light, whereas a root cell underground usually has none.
A sub-cellular structure in photosynthetic eukaryotic cells where photosynthesis occurs.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A subcellular structure in which photosynthesis takes place; it contains the green pigment chlorophyll.
Revise: ChloroplastsA chloroplast is the subcellular structure in which photosynthesis takes place. This creates a direct structure–function relationship: cells that photosynthesise need chloroplasts because these provide the location and pigment needed for the process.