Unit 15 - Drugs

Question 1

Drug

Answer 1

Any substance taken into the body that modifies or affects chemical reactions in the body

Question 2

Antibiotics

Answer 2

Medical drugs that kill bacteria or stop them from reproducing

Question 3

Function of antibiotics

Answer 3

Protect human from severe or life-threatening pathogens/diseases

Question 4

Pathogens that can’t be cured by antibiotics

Answer 4

Viruses - don’t have cell membranes or cell walls

Question 5

How antibiotics work

Answer 5

• Can cause bacterial cell membrane to break, killing the cell
• Can prevent bacteria from making new cell walls - bacteria can’t reproduce or grow

Question 6

Natural selection in bacteria

Answer 6

Some bacteria are resistant to antibiotics and produce substances that counteract effects - continue reproducing while others will die, making new population