Question

The biological half-life of caffeine, the time required for the body to eliminate one-half of the total amount of caffeine, for an individual is 5 hours. Which statement about the amount of caffeine in the individual's body is correct?

Option 1: After 5 hours, there will be no caffeine left in the individual's body.
Option 2: After 5 hours, half of the initial caffeine amount will remain in the individual's body.
Option 3: The amount of caffeine in the body will double every 5 hours.
Option 4: The amount of caffeine in the body will decrease linearly over time.

Answer 1

After 5 hours, half of the initial caffeine amount will remain in the individual's body.

Step-by-step explanation:

The correct statement about the amount of caffeine in the individual's body is Option 2: After 5 hours, half of the initial caffeine amount will remain in the individual's body. This is because the biological half-life of caffeine is 5 hours, which means it takes 5 hours for the body to eliminate half of the total amount of caffeine. After 5 hours, the other half of the caffeine will still remain in the body.