What are the differences between prokaryotic and eukaryotic cytoskeletons?
Eukaryotic cytoskeletons
- Composed of three types of filaments: microtubules, microfilaments, and intermediate filaments.
- Microtubules are hollow, cylindrical structures made of tubulin protein. They are involved in cell division, cell shape, and the transport of materials within the cell.
- Microfilaments are thin, solid rods made of actin protein. They are involved in cell movement, cell shape, and the formation of microvilli.
- Intermediate filaments are thicker than microfilaments and are made of a variety of proteins. They are involved in the support of the cell shape and the maintenance of cell integrity. ### Prokaryotic cytoskeletons
- Composed of a single type of filament: actin filaments.
- Actin filaments are thin, solid rods made of actin protein. They are involved in cell movement and cell shape.
- Prokaryotic cytoskeletons are generally much simpler than eukaryotic cytoskeletons.
Questions and answers
- What are the three types of filaments that make up eukaryotic cytoskeletons?
- Microtubules, microfilaments, and intermediate filaments.
- What is the primary component of microtubules?
- Tubulin protein.
- What is the role of microfilaments in the cell?
- Cell movement, cell shape, and the formation of microvilli.
- What is the unique characteristic of intermediate filaments?
- They are thicker than microfilaments and are made of a variety of proteins.
- Which type of filament is found in prokaryotic cytoskeletons?
- Actin filaments.
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