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A nucleus typically contains between one and ten compact structures called Cajal bodies or coiled bodies (CB), whose diameter measures between 0.2 μm and 2.0 μm depending on the cell type and species. [35] When seen under an electron microscope, they resemble balls of tangled thread [36] and are dense foci of distribution for the protein ...
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A nucleus with full shells is exceptionally stable, as will be explained. As with electrons in the electron shell model, protons in the outermost shell are relatively loosely bound to the nucleus if there are only few protons in that shell, because they are farthest from the center of the nucleus. Therefore, nuclei which have a full outer ...
A comprehensive diagram of a human cell nucleus. Date: 27 April 2006: Source: I did it myself with adobe ilustrator using the information found here , ,, and : Author: Mariana Ruiz LadyofHats: Permission (Reusing this file)
The root mean squared (RMS) charge radius of most stable (and many unstable) nuclides have been experimentally determined. [2] If the nucleus is assumed to be spherically symmetric, an approximate relationship between nuclear radius and mass number arises above A=40 from the formula R=R o A 1/3 with R o = 1.2 ± 0.2 fm. [6] R is the predicted ...
8th shell: 58 states (n = 6, j = 1 / 2 , 3 / 2 , 5 / 2 , 7 / 2 , 9 / 2 or 11 / 2 ; n = 7, j = 15 / 2 ). and so on. Note that the numbers of states after the 4th shell are doubled triangular numbers plus two .
The nuclear pore complex (NPC) is a crucial cellular structure with a diameter of approximately 120 nanometers in vertebrates. Its channel varies from 5.2 nanometers in humans [14] to 10.7 nm in the frog Xenopus laevis, with a depth of roughly 45 nm. [15] Additionally, mRNA, being single-stranded, has a thickness ranging from 0.5 to 1 nm.