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The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells , have no nuclei , and a few others including osteoclasts have many .
Outline of cell biology. Cell structure: Cell coined by Robert Hooke; Techniques: cell culture – flow cytometry – microscope – light microscope – electron microscopy – SEM – TEM – live cell imaging; Organelles: Cytoplasm – Vacuole – Peroxisome – Plastid. Cell nucleus. Nucleoplasm – Nucleolus – Chromatin – Chromosome ...
Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death.
The cell is the fundamental unit of structure and function in all living organisms. [14] The activity of an organism depends on the total activity of independent cells. [15] Energy flow (metabolism and biochemistry) occurs within cells. Cells contain DNA which is found specifically in the chromosome and RNA found in the cell nucleus and ...
Most important among these is a cell nucleus, [2] an organelle that houses the cell's DNA. This nucleus gives the eukaryote its name, which means "true kernel (nucleus)". Some of the other differences are: The plasma membrane resembles that of prokaryotes in function, with minor differences in the setup. Cell walls may or may not be present.
it is a version without text of the File:Diagram human cell nucleus.svg: Date: 17 jun 2006 (original 27 april 2006) Source: edited with adobe ilustrator: Author: Mariana LadyofHats: Permission (Reusing this file)
Many important cell functions take place in the nucleus, more specifically in the nucleoplasm. The main function of the nucleoplasm is to provide the proper environment for essential processes that take place in the nucleus, serving as the suspension substance for all organelles inside the nucleus, and storing the structures that are used in ...
Immunofluorescence staining pattern of sp100 antibodies. Nuclear dots can be seen in the nucleus of the cells. Produced using serum from a patient with primary biliary cirrhosis on HEp-20-10 cells with a FITC conjugate. These, or similar, bodies have been found increased in the presence of lymphoid cancers [25] [26] and SLE (lupus). [27]