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B1 Cells - Coggle Diagram
B1 Cells
Animal Cells
nucleus - controls all activities of the cell and is surrounded by nuclear membrane, contains genes that carry instructions for making new proteins needed to build new cells
cytoplasm - a liquid gel in which organelles are suspended and where most of the chemical reactions for life take place
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mitochondria - structures in the cytoplasm where aerobic respiration takes place, releasing energy, very small
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Plant Cells
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Chloroplasts - found in all the green parts of a plant, contain chlorophyll(absorbs light for photosynthesis)
Permanent Vacuole - space in cytoplasm filled with cell sap, keeps the cell rigid to support the plant
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Specialisation in plants
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Xylem Cells
Alive when formed but a special chemical called lignin builds up in spirals in cell walls, the cell dies and forms long hollow tubes
Spirals of lignin make them very strong and help them withstand the pressure of water moving up the plant
Phloem Cells
Cell walls between cells break down to form sieve plates that allow water to move freely up and down tubes to where is needed
Lose a lot of internal structure but are supported by companion cells, mitochondria of the companion cells transfer energy needed to move dissolved food up and down the plant
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