Preventing + Treating disease

Question 1

what is a placebo

Answer 1

medicine with no effect given to patients instead of real drug

Question 2

what happens in pre-clinical stage of drug trial

Answer 2

drug tested on cells, tissues and live animals

Question 3

what is a double-blind trial

Answer 3

a trial where neither patients nor doctors know who receives the real drug and who receives the placebo

Question 4

what properties of new drugs are clinical trials designed to test

Answer 4

-toxicity
-efficacy
-dosage

Question 5

what’s an antibiotic

Answer 5

a drug that kills bacteria but not viruses

Question 6

what are antigens

Answer 6

proteins on surface of pathogens

Question 7

what happens during phagocytosis

Answer 7

phagocyte attracted to pathogen engulfs it, releases enzymes to digest it

Question 8

3 functions white blood cells have

Answer 8

-phagocytosis (engulfing pathogen)
-producing antibodies
-producing antitoxins

Question 9

Name 3 non-specific systems that the body uses to prevent pathogens entering

Answer 9

-skin
-cilia and mucus in nose, trachea (throat), and bronchi
-stomach acid