B. Hydrogen bonds make the positive sides of water molecules stick to each other
Answer:
Cell surface receptors (membrane receptors, transmembrane receptors) are receptors that are embedded in the plasma membrane of cells. They act in cell signaling by receiving (binding to) extracellular molecules. They are specialized integral membrane proteins that allow communication between the cell and the extracellular space.
Explanation:
The Golgi apparatus.
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The environment is rich in infectious agents that transmit disease through pathogens.
