Questions and Answers
What is the main function of the cytoskeleton in animal cells?
What is the diameter of microtubules?
What is the prefix 'cyto' in cytoskeleton?
What are the blue structures labeled in the diagram?
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What is the function of the mitotic spindle?
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What are microtubules involved in, aside from the mitotic spindle?
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What structures are dotted on the endoplasmic reticulum?
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What is the function of the cytoskeleton in relation to the transport of substances within the cell?
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What is the function of cilia?
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What is the diameter of microtubules?
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What is the function of intermediate filaments?
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What is the diameter of intermediate filaments?
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What is the function of microfilaments?
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What is the diameter of microfilaments?
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What is an example of a cell that uses microfilaments to move?
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What is the function of flagella?
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What are all three types of filaments made of?
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What is an example of a process that uses microfilaments?
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Study Notes
Cytoskeleton
- The cytoskeleton is the skeleton of the cell, providing structural support, movement, and transport of substances within the cell, similar to the purposes of the human skeleton.
Functions of the Cytoskeleton
- Provides structural support
- Helps with movement
- Helps with the transport of substances within the cell
- Other functions to be discussed later
Structures of the Cytoskeleton
- Microtubules:
- Have a diameter of approximately 25 nanometers
- Involved in mitotic spindle, cilia, flagella, and transport of substances within the cell
- Intermediate Filaments:
- Have a diameter of approximately 10 nanometers
- Provide structural support to the cell, resisting mechanical stress and helping the cell retain its shape
- Can be compared to the metal springs in a mattress
- Microfilaments:
- Have a diameter of approximately seven nanometers
- Involved in movement of the entire cell from within, different from cilia and flagella
- Examples: cell division, amoeba movement and pseudopods
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Description
Learn about the cytoskeleton, its meaning, and its purposes in animal cells. Understand the role it plays in cellular functions.
