Biology Forums - Study Force

The nursing student is preparing a presentation for the class on the relationship of ligands to receptors. Which explanation should the student include in the presentation?
1. "The drug ligand works like a key that fits into a lock, which is the receptor protein in the neuron."
2. "The drug ligand is the door that opens into the house, which is the neuron."
3. "The receptor protein is like a flame that ignites the stove, which is the drug ligand."
4. "The drug ligand works like a comforter, providing a protective cover for the receptor protein."

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