Cell Functions Essay

Submitted By SR71
Words: 380
Pages: 2

1. How does the structure of the cytoskeleton contribute to its function? It supports the cell and maintains its shape. • It controls the positions and movements of organelles within the cell. • It is involved with bulk movements of the cytoplasm, called cytoplasmic streaming. • It interacts with extracellular structures, helping to anchor the cell in place. Microfilaments Made up of strands of the protein actin; often interact with strands of other proteins. Intermediate filaments Made up of fibrous proteins organized into tough, ropelike assemblages that stabilize a cell’s structure and help maintain its shape. Microtubules Long, hollow cylinders made up of many molecules of the protein tubulin. Tubulin consists of two subunits, α-tubulin and β-tubulin.
2. Explain the role of an inhibitor for scientists looking to determine if Amoeboid cell movements are caused by cytoskeleton.
In test tubes, the drug cytochalasin B prevents microfilament formation from monomeric precursors. This led to the question:

Things you should make sure you understand: (feel free to ask questions about them in class) · The structure and function of cillia and flagella. · The structure and functions of the three major components of the cytoskeleton (microfilaments, microtubules, and intermediate filaments). · The structure and function of the cell wall. · The structure and function of the extracellular matrix.
The differences in structure and function among the types of intercellular junctions found in cells (tight junctions, gap junctions, desmosomes, and plasmodesmata)

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