what are centrosomes also called?
430650
Centrosomes are sometimes referred to as the “MTOC,” or “microtubule organizing center” of the cell. They serve to direct the movements of microtubules and other cytoskeletal structures and proteins, ultimately allowing large changes to the shapes of animal cell membranes.
191807
Are centrosomes found in a prokaryotic cell? No. Centrosomes are only found in animal cells and are absent in other eukaryotes as they are replaced by other MTOC ( Mictrotubule Organising Centre).
58160
Cilia, flagella, and centrioles. Cilia and flagella are projections from the cell. They are made up of microtubules , as shown in this cartoon and are covered by an extension of the plasma membrane. They are motile and designed either to move the cell itself or to move substances over or around the cell.
319174
['Centromeres separate, and chromatids of the chromosomes separate.', 'Spindle fibers shorten and pull these new individual chromosomes toward centrioles.', 'Cytokinesis begins.']
1355039
A major organelle in most eukaryotic cells is the structure of membrane-bound sacs called the Golgi apparatus (or Golgi body, Golgi complex, dictyosome). It acts to process and package the macromolecules such as proteins and lipids that are synthesized by the cell.
736946
At the end of prometaphase, the centrosomes have aligned at opposite ends, or poles of the cell and chromosomes are being moved toward the center of the cell. ... Movement is mediated by the kinetochore microtubles, which push and pull on the chromosomes to align them into what is called the metaphase plate.
927362
Centrioles are found as single structures in cilia and flagella in animal cells and some lower plant cells. Centrioles are constructed of microtubules. In animal cells centrioles organise the pericentriolar material to produce microtubules including mitotic spindle fibres.
886020
In cell biology a centriole is a cylindrical organelle composed mainly of a protein called tubulin. Centrioles are found in most eukaryotic cells. A bound pair of centrioles, surrounded by a shapeless mass of dense material, called the pericentriolar material (PCM), makes up a structure called a centrosome.
1339117
Known as the main microtubule organizing center of animal cells (MTOCs), the centrosome participates in the organization of the microtubule network within the cell. It is formed of two centrioles surrounded by a structured matrix of proteins called the pericentriolar material (PCM).
1375163
Because the centrosome nucleates microtubules and controls microtubule numbers and lengths it directs most microtubule-related functions including transport of macromolecular complexes, positioning of cell organelles, cell motility, cell shape, polarity, and segregation of chromosomes during cell division.
850501
Centrioles are involved in the organization of the mitotic spindle and in the completion of cytokinesis. Centrioles were previously thought to be required for the formation of a mitotic spindle in animal cells. ... The centrioles can self replicate during cell division.
903661
Mitotic spindles are microtubule-based structures that separate chromosomes during mitosis. In most animals and fungal cells, spindle microtubules nucleate from centrosomes or spindle pole bodies.
1135390
While the term centromere is generally taken to refer to the DNA segment that confers centromere function, the cytologically visible centromere is more complex . In mitosis, a proteinaceous structure, the kinetochore, assembles at the surface of the centromere and acts as the site of spindle microtubule binding.
968572
During metaphase, the cell's chromosomes align themselves in the middle of the cell through a type of cellular "tug of war." The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids.
501445
Kinetochore fibers attach to a disk-shaped protein—called a kietochore—that is found in the centromere region of each chromesome. Kinetochore fibers extend from the kinetochore of each chr matid to one of the centrosomes. Polar fibers extend across the dividing cell from centrosome to centrosome.
1270556
Mitotic Spindle Formation in Plants. Mitotic spindles are microtubule-based structures that separate chromosomes during mitosis. In most animals and fungal cells, spindle microtubules nucleate from centrosomes or spindle pole bodies.
284041
Centrosomes and lysosomes are found in animal cells, but do not exist within plant cells. ... Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells.