nucleus

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Definition/MeaningWord/Phrase
cell without a nucleus (as an erythrocyte) acaryote , akaryocyte , akaryote
part of a cell nucleus that is relatively uncolored by stains or dyes achromatin
radioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particle alpha decay
positively charged particle that is the nucleus of the helium atom; emitted from natural or radioactive isotopes alpha particle
direct method of cell division characterized by simple division of the nucleus without formation of chromosomes amitosis
male parthenogenesis in which the embryo contains only paternal chromosomes due to the failure of the egg nucleus to participate in fertilization androgenesis , androgeny
chemical element's number of protons in nucleus atomic number
order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element atomic number
radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particle beta decay
energy required to separate particles from a molecule or atom or nucleus; equals the mass defect binding energy , separation energy
(physics) a theory of atomic structure that combined Rutherford's model with the quantum theory; electrons orbiting a nucleus can only be in certain stationary energy states and light is emitted when electrons jump from one energy state to another Bohr theory
nucleus of military personnel capable of expansion cadre
personnel nucleus cadre
small unit serving as part of or as the nucleus of a larger political movement cadre , cell
atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field caesium clock
English physicist who discovered the pion (the first known meson) which is a subatomic particle involved in holding the nucleus together (1903-1969) Cecil Frank Powell , Powell
small region of cytoplasm adjacent to the nucleus; contains the centrioles and serves to organize the microtubules central body , centrosome
one of a pair of small cylindrical cell organelles near the nucleus in animal cells; composed of nine triplet microtubules and form the asters during mitosis centriole
readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes chromatin , chromatin granule
threadlike body in the cell nucleus that carries the genes in a linear order chromosome
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