Drugs.

Question 1

What is a drug?

Answer 1

A drug as any substance taken into the body that modifies or affects chemical reactions .in the body

Question 2

Describe the use of antibiotics for the treatment of bacterial infections.

Answer 2

They slow down the reproduction of bacteria so that the body’s own immune system can destroy them. Antibiotics act on bacteria by preventing cell wall formation, leading to the breakdown of the cell wall and the leakage of cell contents.

NOTE - Antibiotics kill bacteria but not viruses because viruses are not cells.

Question 3

The use of antibiotics is increasing, antibiotics should not be used unnecessarily and a course of treatment must be completed. What happens if this doesn’t happen?

Answer 3

If not, some of the bacteria population recovers and developed strains of bacteria that are resistant to the antibiotics. If this happens the effectiveness of the antibiotic is reduced and new antibiotics need to be developed.