Describe the various functions of proteins in membranes
What will be an ideal response?
The different types of proteins in the plasma membrane may function as the following: (a) channels that allow the movement of specific ions or polar molecules down a concentration gradient; (b) carriers, which change shape to transport substances either down or up a concentration gradient; (c) docking-marker acceptors, which bind to secretory vesicles and trigger exocytosis; (d) membrane-bound enzymes that facilitate specific chemical reactions; (e) receptors, which bind to chemical messengers in the ECF and can then trigger reactions inside the cell; (e) cell adhesion molecules (CAMs) that can help hold adjacent cells together; and (f) cell-recognition markers that allow the body to recognize its own cells.
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Answer the following statement true (T) or false (F)
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