Cell Basics
Cells are microscopic building blocks of the human body that play a functional and a structural role. Cells vary in function, shape and size, and their function is closely related to their structure.
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Differences
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Cells have specific qualities that allow them to function efficiently.
Similarities
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All cells are encased in a cell membrane and contain many tiny structures. The inner portion of the cell is divided into the nucleus and the cytoplasm.
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Membrane
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The cell membrane is made of proteins and phospholipids. It divides the inner parts of the cell from the material outside of the cell.
Nucleus
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Most cells have one nucleus, which functions as the control center of the cell. Mature red blood cells are the only cells that do not have a nucleus.
Cytoplasm
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Cytoplasm is a jelly-like substance that fills the inside of the cell and contains the smaller specialized functions of the cell.
Organelles
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There are many tiny organelles, or specialized microscopic components, found in the cytoplasm, which function together to regulate, control, provide transport and manufacture secretions for the cell.
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