drydecay-
Co-transport
Type of facilitated diffusion by which 2 substances are simultaneously transported across a membrane by the same carrier protein
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Where does co-transport happen
Ileum (small intestine) and kidney nephron
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Co-transport process
Glucose and Na+ attach to the same carrier protein in cell membrane. Carrier protein changes shape and deposits both glucose and Na+ into the cell. Na+ are pumped out of the cell, lowering the concentration gradient inside. Glucose leaves the cell through a carrier protein.
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Na+K+ pump
Transport protein is present in the cell membrane of all animal cells and is the most important and abundant and important of all membrane pumps
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Work of Na+K+ pump
Most complex - simultaneously pumping three sodium ions out of the cell and two potassium ions into the cell for each molecule of ATP split
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Cytosis
Process is active transport where parts of the plasma membrane form infoldings or outfoldings
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Exocytosis
Bulk transport of molecules, too large to pass through a cell membrane even via channel or carrier proteins, out of a cell.
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Endocytosis
Bulk transport of molecules, too large to pass through a cell membrane even via channel or carrier proteins, into a cell
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Phagocytosis
Type of endocytosis where large solid particles or small organisms are taken into a cell. Phagocytes also engulf microbes this way
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Pinocytosis
A type of endocytosis where liquids are taken into a cell
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Endocytosis process
Phagocytosis - solid substances/sometimes whole organisms are taken into a cell through infolding of the surface membrane. Pinocytosis - Process is similar to phagocytosis, but infoldings in the membrane are much smaller. Liquids or large micromolecules are taken in through small vesicles
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Exocytosis process
Opposite of endocytosis - vesicles and vacuoles move towards surface membrane, fuse with it, and release their content outside the cell
