Cytoskeleton
All cells have intermediate filaments, but the protein subunits of these structures vary. Some cells have multiple types of intermediate filaments, and some intermediate filaments are associated with specific cell types. The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement. There is no single cytoskeletal component. The cytoskeleton of a cell is made up of microtubules, actin filaments, and intermediate filaments. These structures give the cell its shape and help organize the cell's parts. In addition, they provide a basis for movement and cell division. The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement. There is no single cytoskeletal component. Not all cells use cilia or flagella for movement. Some, such as Amoeba, Chaos (Pelomyxa) and human leukocytes (white blood cells), employ pseudopodia to move the cell. Unlike cilia and flagella, pseudopodia are not structures, but rather are associated with actin near the moving edge of the cell.  (not shown in this diagram). The cytoskeleton is a system of microtubules and microfilaments which runs all through the cell, particularly just under the plasma membrane. Microtubules and microfilaments are responsible for all kinds of movement functions.  In many types of cells, networks of actin filaments are found beneath the cell cortex, which is the meshwork of membrane-associated proteins that supports and strengthens the plasma membrane. The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement. There is no single cytoskeletal component. 1. The cytoskeleton is the cytoplasmic structure that supports the cell, maintains its shape and holds or moves cell organelles. It is made of an extensive network of fibers dispersed in the cytoplasm and anchored in the plasma membrane. Its components are microtubules, microfilaments and intermediate filaments. 2. Microtubules are made of consecutive dimers of the protein tubulin (each dimer contains an alpha and a beta tubulin). Microtubules play a role in cell division; they are components of cilia and flagella and they also form centrioles. The cytoskeleton is the cytoplasmic structure that supports the cell, maintains its shape and holds or moves cell organelles. 2. Microtubules are made of consecutive dimers of the protein tubulin (each dimer contains an alpha and a beta tubulin). Microtubules play a role in cell division; they are components of cilia and flagella and they also form centrioles. Microfilaments are made of actin (a protein). The contractile bond between actin and myosin as well as other cytoplasmic proteins gives microfilaments the ability to promote cell movement. 1  The Cytoskeleton and Cell Movement-Image Diversity: microfilaments actin and myosin intermediate filaments. 2. Microtubules are made of consecutive dimers of the protein tubulin (each dimer contains an alpha and a beta tubulin). Microtubules play a role in cell division; they are components of cilia and flagella and they also form centrioles. Cellular structures are called organelles. There are many different organelles in a cell, but these are the main ones: the Nucleus, Mitochondrion, Chloroplasts, Golgi Apparatu … s, and Endoplasmic reticulum. The Nucleus is the center of a cell, it carries the DNA that codes for the proteins that the cell makes. The Endoplasmic Reticulum is where many Ribosomes are located, Ribosomes are tiny organelles that have the capability of reading RNA, a molecule similar to DNA, and read the message transcribed on them to create proteins. Plasma membrane. This is the outer most membrane of the cell, within which all protoplasmic structures are included. In plants, cell wall acts as an additional protective layer, but in animal cell, plasma membrane itself is the bounding membrane. A group of membrane cisternae, discovered by Camillo Golgi in 1890, are called as Golgi bodies. They are present in all cells except bacterial and blue-green algal cells. These structures vary in number from cell type to cell type.
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what structures are associated with cell movement