microtubules and microfilaments

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4 Terms

1
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microtubule

  • based motility

  • structure: cilia and flagella

  • cargoes of cells, protozoa, sperm

2
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cilia and flagella structure

  • same structure

  • cilia: 2-10 ×0.25 um

  • flagella: 100-200 ×0.25 um

  • major functional strucutre- the axoneme

  • different waveforms (depends on which dynein molecules involved

3
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dynein arms

in isolated doublets microtubules, the ddynein produces microtubule sliding

the nexins link the microtubules together

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basal bodies

  • 9×3 microtubule array

  • 0.2um x 0.4 um (diameter x length)

  • basal bod7«centriole» centrosome

<ul><li><p>9×3 microtubule array</p></li><li><p>0.2um x 0.4 um (diameter x length)</p></li><li><p>basal bod7«centriole» centrosome</p></li></ul><p></p>