Unformatted text preview: • Centrioles and basal bodies act as microtubule organizing centers (MTOCs). A pair of centrioles (enclosed in a centrosome) located outside the nuclear envelope gives rise to the microtubules that make up the spindle apparatus used during cell division. Basal bodies are at the base of each flagellum and cilium and appear to organize their development. Both centrioles and basal bodies are made up of nine triplets arranged in a circle (Figure 3). • Peroxisomes are organelles common in liver and kidney cells that break down potentially harmful substances. Some chemical reactions in the body produce a byproduct called hydrogen peroxide. Peroxisomes can convert hydrogen peroxide (a toxin made of H 2 O 2 ) to water and oxygen. Figure 2. The general organization of a typical cell....
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This note was uploaded on 11/10/2011 for the course PT 101 taught by Professor Staff during the Spring '10 term at Texas State.
- Spring '10