Which components comprise the cytoskeleton, providing structural support and shape to the cell?

Which components comprise the cytoskeleton, providing structural support and shape to the cell?

• A. Microtubules/Microfilaments
• B. Ribosomes
• C. Golgi Apparatus
• D. Lysosomes

Answer: (A)

The cytoskeleton is built from protein filaments that give the cell its shape and mechanical support, with the two main components being microtubules and microfilaments. Microtubules are hollow tubes made of tubulin that form a structural framework and serve as tracks for moving organelles around the cell, and they also organize chromosomes during cell division. Microfilaments are thin actin filaments that support the cell’s cortex, help maintain shape, and generate movement by interacting with motor proteins. In contrast, ribosomes are the sites of protein synthesis, the Golgi apparatus processes and ships proteins, and lysosomes digest waste materials—functions unrelated to providing the cell’s structural framework.

The cytoskeleton is built from protein filaments that give the cell its shape and mechanical support, with the two main components being microtubules and microfilaments. Microtubules are hollow tubes made of tubulin that form a structural framework and serve as tracks for moving organelles around the cell, and they also organize chromosomes during cell division. Microfilaments are thin actin filaments that support the cell’s cortex, help maintain shape, and generate movement by interacting with motor proteins. In contrast, ribosomes are the sites of protein synthesis, the Golgi apparatus processes and ships proteins, and lysosomes digest waste materials—functions unrelated to providing the cell’s structural framework.