Answer: The filaments associated with cell shape, movement, contraction, and cell division are:
a) Actin filaments
b) Intermediate filaments
c) Microtubules
Step-by-step explanation:
Actin filaments, also known as microfilaments, are composed of the protein actin. They are involved in various cellular processes, including maintaining cell shape, cell movement, and muscle contraction. Actin filaments form a network of structures within the cell that provide structural support and allow cells to change shape and move.
Intermediate filaments are a diverse group of filaments made up of different types of proteins, such as keratins, vimentins, and neurofilaments. They play a role in maintaining cell structure and providing mechanical stability to cells. Intermediate filaments are found in different types of cells, such as epithelial cells, muscle cells, and nerve cells.
Microtubules are hollow, tube-like structures composed of protein subunits called tubulins. They play a crucial role in cell division by forming the spindle fibers that separate the chromosomes during mitosis and meiosis. Microtubules are also involved in maintaining cell shape and providing tracks for intracellular transport.
In summary, the filaments associated with cell shape, movement, contraction, and cell division are actin filaments, intermediate filaments, and microtubules. Each type of filament has its specific functions and contributes to the overall structure and functionality of cells.