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- https://bio.libretexts.org/Workbench/Bio_11A_-_Introduction_to_Biology_I/07%3A_Cell_Structure_and_Function/7.06%3A_Chapter_SummaryThe unified cell theory states that one or more cells comprise all organisms, the cell is the basic unit of life, and new cells arise from existing cells. Like a prokaryotic cell, a eukaryotic cell ha...The unified cell theory states that one or more cells comprise all organisms, the cell is the basic unit of life, and new cells arise from existing cells. Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning a membrane surrounds its DNA), and has other membrane-bound organelles that allow for compartmentalizing functions.
- https://bio.libretexts.org/Courses/Norco_College/OpenStax_Biology_2e_for_Norco_College/04%3A_Cell_Structure/4.08%3A_Chapter_SummaryThe unified cell theory states that one or more cells comprise all organisms, the cell is the basic unit of life, and new cells arise from existing cells. Like a prokaryotic cell, a eukaryotic cell ha...The unified cell theory states that one or more cells comprise all organisms, the cell is the basic unit of life, and new cells arise from existing cells. Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning a membrane surrounds its DNA), and has other membrane-bound organelles that allow for compartmentalizing functions.
- https://bio.libretexts.org/Workbench/Bio_11A_-_Introduction_to_Biology_I/08%3A_Coordinating_Cell_Activites/8.06%3A_Chapter_SummaryThe endomembrane system includes the nuclear envelope, lysosomes, vesicles, the ER, and Golgi apparatus, as well as the plasma membrane. The SER synthesizes carbohydrates, lipids, and steroid hormones...The endomembrane system includes the nuclear envelope, lysosomes, vesicles, the ER, and Golgi apparatus, as well as the plasma membrane. The SER synthesizes carbohydrates, lipids, and steroid hormones; engages in the detoxification of medications and poisons; and stores calcium ions. When protein receptors on the plasma membrane's surface of an animal cell bind to a substance in the extracellular matrix, a chain of reactions begins that changes activities taking place within the cell.
