Introduction to Cells

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Introduction to Cells
How we study cells
Two basic types Transmission (TEM) Scanning
(SEM)
microscope
magnification resolving power
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How we study cells
Cell fractionation
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A view of the cell
All cells are membrane bound, possess ribosomes
and contain DNA
1. plasma membrane
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A view of the cell
2. All cells possess ribosomes
Large Subunit
Ribosomes
Small Subunit
3. All cells contain DNA
Two categories of cells prokaryotic
eukaryotic
Additional components of any cell
cytoplasm
cytosol
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A view of the prokaryotic cell
Kingdom Monera archaebacteria and eubacteria
plasma membrane
ribosomes
nucleoid
cell wall
capsule
pili
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A view of the eukaryotic cell
Elaborately compartmentalized systems
Generalized animal cell
Generalized plant cell
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A view of the eukaryotic cell
nucleus
nucleolus
chromatin
nucleolus
chromatin
outer membrane
inner membrane
nuclear lamina
nuclear lamina
pore complex
nuclear envelope
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A view of the eukaryotic cell
ribosomes
free membrane-bound
endoplasmic reticulum
free
bound
endomembrane system
vesicles
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A view of the eukaryotic cell
endoplasmic reticulum
cisteranl space
cisternae
smooth ER
rough ER
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Protein Synthesis on the Rough ER
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A view of the eukaryotic cell
Golgi apparatus
transport vesicle from ER
cisternae
cis face
transport vesicle
trans face
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A view of the eukaryotic cell
Lysosome
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A view of the eukaryotic cell
Vacuoles
Paramecium - osmoregulation
Review endomembrane system
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A view of the eukaryotic cell
Other membranous organelles
mitochondria and chloroplasts
peroxisomes
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Evolution of Membrane-bound Organelles