phys notes day 3: cell & tissue physiology

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Last updated 1:41 PM on 9/12/26

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organelles

specialized subcellular structures within a cell

have characteristic shapes

specific functions

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nucleus

spherical/oval shaped structure

most prominent feature of cell

nuclear envelope with nuclear pores

nucleolus (ribosome factory)

DNA packaged as chromosomes (46 total, 2 sex chromosomes)

Each chromosome=1000s of hereditary units = genes

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packing of DNA in a cell

double helix form

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parts of chromosome

chromatids, centromere, telomere