The document discusses various aspects of dopamine, neurotransmitters, and alcohol. It provides true/false and multiple choice questions about their roles and effects. Dopamine is responsible for mood, pleasure/reward, and alertness. Natural pain killers in the body are endorphins. Alcohol is metabolized in the liver and primarily impacts the limbic system of the brain. It can increase violence and accidents when misused. College binge drinking is common and negatively impacts academic and social functioning.