Question

is a neurotransmitter in the brain that regulates emotion, motivation, and pleasure * 4 points
○ serotonin
○ dopamine
○ heroin

drug users must take larger amounts of the drug to create the dopamine high over and over again. they are chasing that first high-this creates a ______ in the body * 4 points
○ tolerance
○ high
○ dopamine

increased heart rate, problem solving, paranoia, hallucinations, memory, learning problems, loss of coordination are all sign of what for marijuana? * 2 points
○ short-term effects
○ addiction
○ drug abuse

Explanation:

First Question:

Dopamine is a neurotransmitter that plays a key role in regulating emotion, motivation, and pleasure. Serotonin is involved in mood, sleep, etc., and heroin is a drug, not a neurotransmitter.

Tolerance is when the body adapts to a drug, requiring larger doses to achieve the same effect. "High" is the effect, and dopamine is a neurotransmitter, not related to the body's adaptation here.

The listed effects (increased heart rate, paranoia, etc.) occur shortly after using marijuana, which are short - term effects. Addiction is a long - term compulsive use, and drug abuse is a pattern of use, not these immediate effects.

Answer:

B. Dopamine

Second Question: