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Nuclear membrane


nuclear membrane -- The double membrane which surrounds the eukaryotic nucleus. It has many pores in its surface which regulate the flow of large compounds into and out of the nucleus.
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nuclear membrane The membrane surrounding the nucleus of eucaryotic cells.
nuclear pores Pitted regions in the nuclear envelope through which processed mRNA migrates to the ribosomes.
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The nuclear membrane also disappears, revealing tightly wrapped chromosomes in the form of the afore-mentioned sister chromatids, as well as the centrioles at opposite poles of the nucleus, anchoring the chromatids in preparation for metaphase, ...
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The nuclear membrane reappears.
The chromosomes uncoil.
The spindle apparatus breaks down.
The cell divides into two.
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Bacteria lack a nuclear membrane and membrane-bound organelles. Biochemical processes that normally occur in a choloroplast or mitochondrion of eukaryotes will take place in the cytoplasm of prokaryotes.
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Prokaryotes are distinguished from eukaryotes on the basis of nuclear organization, specifically their lack of a nuclear membrane. Prokaryotes also lack any of the intracellular organelles and structures that are characteristic of eukaryotic cells.
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An organism lacking a nuclear membrane and certain organelles such as mitochondria. Refers to both Bacteria and Archae. This term was used synonymously with bacteria before the differences between Bacteria and Archae were understood.
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Telomere ends gather on the nuclear membrane during meiosis, resulting in a morphologically observable chromosome configuration called a bouquet. Bouquet formation occurs at different stages of meiosis in different organisms.
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Telophase
a new set of nucleolus forms along with the nuclear membrane as well as the nucleolus
the cell plate appears and begins to slip in two while the spindle fibers fade and the chromosomes uncoil so the cell can make proteins.
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prophase: the first phase of mitosis; involves chromosomal condensation, nuclear membrane breakdown, and the migration of centrioles to opposite poles.
prophase I: the first phase of meiotic division, during which crossing over takes place.
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An extensive membranous network in eukaryotic cells, continuous with the outer nuclear membrane and composed of ribosome-studded (rough) and ribosome-free (smooth) regions.
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nucleus
An organelle of eukaryotic cells that is bounded by a nuclear membrane and contains the chromosomes whose genes control the structure of proteins within the cell.
Covered in: Lab 3 Cell Biology
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the early phase of cell division from the time the chromosomes first become visible to the beginning of metaphase, when the nuclear membrane disappears and the chromosomes maximally condensed ...
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Researchers at Case Western Reserve University and Copernicus Therapeutics are able to create tiny liposomes 25 nanometers across that can carry therapeutic DNA through pores in the nuclear membrane.
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[Gr. dia - apart; Gr. kinesis - movement]. The last stage of prophase 1 of meiosis, leading to metaphase of the first meiotic division. The chromosomes are at maximum condensation and the nuclear membrane breaks down.
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The last stage (Gk. telos, end) of mitosis, or of either division of meiosis, during which the chromosomes become progressively thinner and more elongated (Heidenhain, 1894). Telophase is said to begin with the formation of a nuclear membrane round ...
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Whereas in the case of the bacteria, the other form of life it is the case that there, they have no nuclear membrane containing the genes, as the eukaryotes do. Nevertheless, they have genes. It's just that they're not enclosed in a bag.
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nucleoplasm The aqueous portion of a cell's contents enclosed by the nuclear membrane; also called the nuclear matrix. nucleoside A compound consisting of a purine or pyrimidine base covalently linked to a pentose, but lacking a phosphate.
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