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Definitions Lec 1-12.docx

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Western University
Biology 1001A
Tom Haffie

DefinitionsSecretory VesiclesA vesicle that transports proteins to the plasma membrane ExocytosisIn eukaryotes the process by which a secretory vesicle fuses with the plasma membrane and releases the vesicle contents to the exterior EndocytosisIn eukaryotes the process by which molecules are brought into the cell from the exterior involving a bulging in of the plasma membrane that pinches off to form an endocytic vesicle LysosomesMembrane bound vesicle contain hydrolytic enzymes for the digestion of many complex molecules PhagocytosisProcess in which some types of cells engulf bacteria or other cellular debris to break them down MitochondriaMembrane bound organelles responsible for the synthesis of ATP in eukaryotic cells CristaeCristae singular crista are the internal compartments formed by the inner membrane of a mitochondrion They are studded with proteins including ATP synthase and a variety of cytochromes MatrixThe cytoplasm of the mitochondria VesiclesA small membrane bound compartment that transfers substance between parts of the endomembrane system Cyt
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