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  2. Nuclear DNA - Wikipedia

    en.wikipedia.org/wiki/Nuclear_DNA

    Nuclear DNA is located within the nucleus of eukaryote cells and usually has two copies per cell while mitochondrial DNA is located in the mitochondria and contains 100–1,000 copies per cell. The structure of nuclear DNA chromosomes is linear with open ends and includes 46 chromosomes and contains for example 3 billion nucleotides in humans ...

  3. Cell nucleus - Wikipedia

    en.wikipedia.org/wiki/Cell_nucleus

    Diagram of the nucleus showing the ribosome-studded outer nuclear membrane, nuclear pores, DNA (complexed as chromatin), and the nucleolus. The nucleus contains nearly all of the cell's DNA, surrounded by a network of fibrous intermediate filaments called the nuclear matrix, and is enveloped in a double membrane called the nuclear envelope.

  4. Nucleic acid structure - Wikipedia

    en.wikipedia.org/wiki/Nucleic_acid_structure

    DNA structure and bases A-B-Z-DNA Side View. Tertiary structure refers to the locations of the atoms in three-dimensional space, taking into consideration geometrical and steric constraints. It is a higher order than the secondary structure, in which large-scale folding in a linear polymer occurs and the entire chain is folded into a specific 3 ...

  5. Cell (biology) - Wikipedia

    en.wikipedia.org/wiki/Cell_(biology)

    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.

  6. File:Diagram human cell nucleus numbered version.svg

    en.wikipedia.org/wiki/File:Diagram_human_cell...

    The following other wikis use this file: Usage on af.wikipedia.org Selkern; Usage on be-tarask.wikipedia.org Ядро вузы; Usage on de.wikipedia.org

  7. Nuclear organization - Wikipedia

    en.wikipedia.org/wiki/Nuclear_Organization

    Examples of different levels of nuclear architecture. Nuclear organization refers to the spatial organization and dynamics of chromatin within a cell nucleus during interphase. There are many different levels and scales of nuclear organisation. At the smallest scale, DNA is packaged into units called nucleosomes, which

  8. DNA - Wikipedia

    en.wikipedia.org/wiki/DNA

    Genomic DNA is tightly and orderly packed in the process called DNA condensation, to fit the small available volumes of the cell. In eukaryotes, DNA is located in the cell nucleus, with small amounts in mitochondria and chloroplasts. In prokaryotes, the DNA is held within an irregularly shaped body in the cytoplasm called the nucleoid. [97]

  9. Nucleic acid - Wikipedia

    en.wikipedia.org/wiki/Nucleic_acid

    In turn, they send and express that information inside and outside the cell nucleus. From the inner workings of the cell to the young of a living thing, they contain and provide information via the nucleic acid sequence. This gives the RNA and DNA their unmistakable 'ladder-step' order of nucleotides within their molecules.