-Refer to the figure for the following question: Drug addiction is characterized by tolerance, in which the user must ingest more of the drug to obtain the same effect. Cellularly, tolerance can be explained by the fact that prolonged use of a drug such as cocaine leads to ________ in the number of receptor proteins present in the postsynaptic neuron.
A) an increase
B) a decrease
C) no change
D) a regulation

Question

-Refer to the figure for the following question: Drug addiction is characterized by tolerance, in which the user must ingest more of the drug to obtain the same effect. Cellularly, tolerance can be explained by the fact that prolonged use of a drug such as cocaine leads to ________ in the number of receptor proteins present in the postsynaptic neuron.
A) an increase 
B) a decrease 
C) no change 
D) a regulation

Quizplus · Accepted Answer

Prolonged use of a drug like cocaine often results in a decrease in the number of receptor proteins in the postsynaptic neuron, as the neuron adapts to the presence of the drug, leading to tolerance.

-Refer to the Figure for the Following Question: Drug Addiction