Question

question 1 (5 points)
which is characteristic of psychoactive drugs?
a) they increase the rate of physiological functions.
b) they alter a persons consciousness, perception, mood, or behavior.
c) they affect only the brain and nerve cells.
d) they affect the liver and kidneys.

Explanation:

🆕 New Concept Discovered: Psychoactive Substances
Chemicals that change how the brain works.

Step 1: Define psychoactive drugs

Psychoactive drugs are chemical substances that act primarily upon the central nervous system. By doing so, they temporarily alter brain function, which leads to changes in a person's awareness, sensory perception, emotional state, and conduct.

Step 2: Evaluate the options

• a) They increase the rate of physiological functions.
• Incorrect: While some psychoactive drugs (like stimulants) increase physiological functions, others (like depressants) slow them down. This is not a universal characteristic of all psychoactive drugs.
• b) They alter a person's consciousness, perception, mood, or behavior.
• Correct: This is the defining characteristic of all psychoactive substances, regardless of whether they are stimulants, depressants, or hallucinogens.
• c) They affect only the brain and nerve cells.
• Incorrect: While their primary target is the central nervous system, they also have systemic effects on other parts of the body (such as heart rate, digestion, and pupil dilation).
• d) They affect the liver and kidneys.
• Incorrect: While the liver metabolizes and the kidneys excrete these drugs, this is a general characteristic of almost all ingested substances, not a defining characteristic unique to psychoactive drugs.

Answer:

b) They alter a person's consciousness, perception, mood, or behavior.