introduction to cells how we study cells: *light microscope microscope *magnification *resolving...
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Introduction to CellsHow we study cells:
*Light microscope
microscope
*magnification *resolving power
*Electron microscope
Two basic types:
*Transmission (TEM) *Scanning (SEM)
How we study cells:
Cell fractionation:
A view of the cell:
1. plasma membrane
*All cells are membrane bound, possess ribosomes and contain DNA
Red blood cell
outside of cell
inside of cell
*Two categories of cells: prokaryotic eukaryotic
A view of the cell:
Ribosomes
2. All cells possess ribosomes
3. All cells contain DNA
cytoplasmcytosol
*Additional components of any cell:
Small SubunitSmall Subunit
Large SubunitLarge Subunit
*nucleoid
A view of the prokaryotic cell:
*plasma membrane
*ribosomes
*cell wall
*capsule
*pili
Kingdom Monera – archaebacteria and eubacteria
A view of the eukaryotic cell:Elaborately compartmentalized systems
*Generalized animal cell
*Generalized plant cell
A view of the eukaryotic cell:nucleus
nuclear envelope
outer membraneinner
membranenucle
ar lamin
a
pore compl
ex
chromatinnucleolus
*nuclear lamina
*nucleolus
*chromatin
A view of the eukaryotic cell:ribosomes
*free *membrane-bound
endoplasmic
reticulumfree
bound
endomembrane system
*vesicles
A view of the eukaryotic cell:endoplasmic reticulum
cisternae
cisteranl space
smooth ER
rough ER
Protein Synthesis on the Rough ER
A view of the eukaryotic cell:Golgi apparatus
*transport vesicle
transport vesicle from ER
cisternae cis face
trans face
A view of the eukaryotic cell:Lysosome
A view of the eukaryotic cell:Vacuoles
Paramecium - osmoregulation
Review: endomembrane system
A view of the eukaryotic cell:Other membranous organelles:
mitochondria and chloroplasts
*peroxisomes
Evolution of Membrane-bound Organelles