文档介绍：Plant Cells.
Dr Samer El-Daher
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Plant Cells – Introduction.
Plant cells exhibit typical eukaryotic cell structure.
They possess plasma membranes, a variety of specialized membrane-anelles, well defined nuclei, and DNA in linear, paired chromosomes.
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Plant Cells – Introduction.
Although similar to animal cells in many ways, there are some important differences.
Plant cell walls
Plasmodesmata.
Living Symplast – continuous cytoplasmic volume
"non-living" fluids - extracellular water, minerals, and pounds found around cells, in spaces of cell walls, and within intercellular spaces.
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Components shared with Animal Cells.
Plasma membrane.  
Nucleus
Nucleoplasm
Mitochondria. 
Ribosome. 
Endoplasmic reticulum
Peroxisomes.
Glycoxisomes. 
Golgi apparatus. 
Microtubules. 
Microfilaments. 
Intermediate filaments
Cilia/flagella. 
The Cytomembrane system.
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Organelles Unique to Plants.
Plant cells possess a variety of membrane-anelles that have specific functions.
Plastids
chloroplasts
Vacuoles
Cell walls
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Plastids.
Visible under the light microscope - plastids are large and fairly obvious..
They are double membrane-anelles They function as synthetic and storage structures
They are self-replicating structures with circular DNA and ribosomes.
They are semi-autonomous and reproduce by fission similar to the division process in prokaryotes.
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