Plant Cell Structure

A summary on plant cell structure.

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Plant Cell Structure
Leaf palaside cell
It's function is to carry out photosynthesis. It is adapted in the following ways:
Long, thin cells which absorb maximum sunlight
Numerous chloroplasts located in the best positions (on the top of the leaf) to collect
maximum amount of sunlight
A large vacuole which pushes the chloroplasts and cytoplasm of the cell
They have a double plasma membrane envelope. This is very selective in what
substances are let in
They have stacks of thylakoids called granum which
include chlorophyll which are the first site of photosynthesis. Some granum are joined
by tubes to other granum
The stroma. This is the second site of photosynthesis and is a fluid-filled matrix, there
are other structures in this, including starch grains
They're adapted for absorption of sunlight in the following ways:

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The granal membranes have a large surface area for the attachment of chlorophyll,
enzymes and substances which need to be there. They're placed in a very highly ordered
The fluid of the stroma possesses all of the enzymes which are needed for the second
stage of photosynthesis
Chloroplasts contain both DNA and ribosomes so the correct proteins needed for
photosynthesis are present
Cell Wall
The cell wall is made up of microfibrils (cellulose polysaccharides). These have extreme strength
because of their structure.…read more


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