Examlex
Which of the following indicates an increase in interest-group activity?
Receptor Sites
Specific locations on the surface of a cell or within a cell where molecules such as hormones, neurotransmitters, or drugs can bind to elicit a physiological response.
Ions
Atoms or molecules with a net electric charge due to the loss or gain of one or more electrons.
Neurotransmitters
Chemicals released by neurons that transmit signals across a chemical synapse, from one neuron to another target neuron, muscle cell, or gland cell.
Neurotransmitter Receptor Sites
Specific locations on nerve cells where neurotransmitters bind to initiate or inhibit electrical signals, facilitating communication between neurons.
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