Intro Ch 1.txt

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What is the cytoskeleton and what is its' importance in the cell?
- Composed of a network of proteins and tubules within the cell cytoplasm: 1. Actin filaments (microfilaments) 2. Microtubules and 3. Intermediate filaments
- Importance: movement of proein from ER to Golgi via microtubules, intercellular motility, role in cell division, protein structure and shape
What types of cellular/intracellular motility are dependent on the actin (microfilament) cytoskeleton?
- Cell motility, assembly and disassembly in the following:
- 1. Brush border of epithelial cells: surface expansion
- 2. epidermis of plants: to allow cytoplasmic flow
- 3. RBC membrane: form a structural matrix network for stability
- 4. Bacteria: DNA molecule segregation and cell shape maintenance
- 5. Slime mold (Physarum): cytoplasmic streaming
What types of cellular/intracellular motility are dependent on the microtubule (MT) cytoskeleton?
- 1.Cell shape & Maintenance
- 2.Intracellular transport: dyneins and kinesins which transport vesicles ie:mitochondria
- 3.Cell wall synthesis in plants
- 4.Mitotic spindle creation
- 5.Axoneme in cilia and flagella
What roles do microfilaments (Mfs) play in cell organization/structure/function?
- 1. Cell motility
- 2. Intracellular motility
- 3. Cell Shape
- 4. Adhesion*
- 5. Cell-to-cell interactions*
- 6. Cytokinesis*
- 7. Cell SIGNALING
What roles do microtubules (Mts) play in cell organization/structure/function?
- 1. Cell motility
- 2. Intracellular motility
- 3. Cell Shape
- 4. Organization of cytoplasm*
- 5. Karyokinesis*
- 6. Cell SIGNALING
What roles do intermediate filaments (Ifs) play in cell organization/structure/function?

1. Cell and Tissue structure and integrity (and nuclear structure and integrity)

Author

rincrocci

227342

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Intro Ch 1.txt

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Updated

2013-07-17T04:22:59Z

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