1) Describe the physical and chemical properties of the monomer and polymer of microtubules
2) Explain how microtubules assemble and disassemble.
3) Explain what molecules in a living cell are necessary to nucleate microtubules.
4) Explain the geography of microtubules.
5) Explain how the geography of the cytoskeleton integrates with the transport of membrane vesicles that are part of the endomembrane system.
6) Explain how the structure of the microtubule singlet is altered when associated with a cilium or flagellum, or in an animal cell, the centrosome. Can you draw the cross section of the 9+2 configuration of microtubules?
7) Describe how to determine the (+) and (-) ends of a microtubule under laboratory conditions.
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1.
__________ are fairly small organelles that provide a safe place within the cell to carry out certain biochemical reactions that generate harmful, highly reactive oxygen species. These chemicals are both generated and broken down in the same location.
Lysosomes |
Endosomes |
Peroxisomes |
Nucleosomes 2. Biologists cannot possibly study all living species. Instead, they try to understand cell behavior by studying a select subset of them. Which of the following characteristics are useful in an organism chosen for use as a model in laboratory studies?
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