Plant cell structure

Cell wall

Description: a rigid stucture surrounding plant cells. Mainly made of cellulose.

Function: supports plant cells

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Middle Lamella

Description: outermost layer of the cell.

Function: It acts as an adhesive, sticking adjacent plant cells together. It gives the plant stability.

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Description: These are channels in cells that link adjacent cells together.

Function: They allow transport of substances and communication between cells.

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Description: Regions of the cell wall is very thin and they line up with the pits in adjacent cells.

Function: allow transport of substances between cells

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Description: A small flattened structure, surrounded by a double membrane. It also has membranes inside called thylakoid membranes. These membranes are stacked up in some parts of the chloroplasts, to form grana, which are linked together by lamellae.

Function: it's the site of photosynthesis. some parts happen in the grana and other parts happen in the stroma (a thick fluid)

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Description: A small organelle surrounded by a membrane, which contain starch granules.

Function: Storage of starch molecules and converting them back to glucose, when the plant needs it. 

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Vacuole and tonoplast

Description: The vacuole is a compartment surrounded by the tonoplast, which is a membrane.

Function: The vacuole contains the cell sap, which is made up of water, enzymes, minerals and waste products. It keeps the cell turgid and are involved in the breakdown and the isolation of unwanted chemicals in the cell. The tonoplast controls what enters and leaves the vacoule

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