Unformatted text preview: are one of the newest organelles discovered. It appears they function to transport messenger RNA through the cytosol to the ribosomes. They seem to also be involved in developing drug resistance. • Microtubules, intermediate filaments, and microfilaments are three protein fibers of decreasing diameter, respectively. All are involved in establishing the shape or movements of the cytoskeleton, the internal structure of the cell. Microtubules are made of the protein tubulin and provide support and mobility for cellular activities. They are found in the spindle apparatus (which guides the movement of chromosomes during cell division) and in flagella and cilia (described later in this list), which project from the plasma membrane to provide motility to the cell....
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- Spring '10
- Golgi Apparatus, Golgi apparatus. Vesicles