Chapter 33, Problem 31A

Summary Introduction

Introduction : Brain is the largest of the human body. It consists of three parts- cerebrum, cerebellum and brainstem.

Answer to Problem 31A

Correct answer :

The correct answer is option (B) amphetamine.

Explanation of Solution

Explanation/justification for the correct answer :

Option (B) amphetamine. It is a stimulant that is used in the treatment of attention that deficit hyperactivity disorder. It decreases brain activity. So, this is the correct answer.

Explanation for incorrect answer :

Option (A) nicotine. It is usually a stimulant that is naturally produced from plants. It is used for smoking to relieve withdrawal symptoms. So, this is not correct.

Option (C) cocaine. It is also known as coke. It is also used as a recreational drug that is commonly snorted or inhaled as smoke or sometimes dissolved and injected in the vein. It actually loses contact with reality. So this is not correct.

Option (D) alcohol. It is the active ingredient in drinks like beer, wine, etc. that causes the characteristics of intoxication. It is a class of organic compounds. So this is not correct.