cell structure an hypothesis originally proposed that all organisms are composed of cells. over...
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Cell Structure
An hypothesis originally proposed that all organisms are composed of cells. Over time, the concept has withstood scientific confirmation to now encompass 3 principles in the Cell Theory:
1) All organisms are composed of 1 or more cells and the life process of metabolism and heredity occur within those cells
2) Cells are the basic units of organization of all organisms
3) Cells arise by the division of pre-existing cells
A generalized Eukaryotic cell
Structure of an animal cell
Structure of a plant cell
A generalized Prokaryotic cell
Relative size ranges
Most cells are microscopic, although vertebrate egg cells are large enough to be seen with the naked eye.
Prokaryotic cells are ~ 1 – 10 um in length
Eukaryotic cells are ~ 10 – 100 um in size
Surface area per unit volumeSmall cells vs. Large cells
Nuclear ultrastructure
Supercoiling of DNA w/i chromosome
Endoplasmic reticulum
Protein Synthesis along the ER
The Golgi apparatus
How proteins are processed
Lysosome function
Ribosome structure
Mitochondrion structure
Chloroplast structure
Representative animal cell
Representative Plant cell
Structures of the Cytoskeleton
Microfilament
Microtubule structure
Intermediate filament
Centrioles
Molecular motor
Flagellum and cilium
The Central Vacuole of Plant cells
Primary and secondary plant cell walls
Glycocalyx of eukaryotic cell