Vaccines

Question 1

what are pathogens?

Answer 1

bacteria and viruses

Question 2

what is the purpose of vaccines?

Answer 2

the stimulate the immune system and cause it to make antibodies in order to prevent a given disease

Question 3

what do vaccines contain?

Answer 3

a dead or weakened pathogen

Question 4

what do antibodies do?

Answer 4

they attack substances and help trap and kill germs that can lead to disease.

Question 5

what are the two ways your body makes antibodies?

Answer 5

by getting the disease or by getting a vaccine

Question 6

true or false; most of the time, your body remembers how to fight a certain pathogen for the rest of your life.

Answer 6

true

Question 7

what are the three types of vaccines? Give a description.

Answer 7

Attenuated vaccines: they’re prepared from weakened pathogen.

Inactivated vaccines: they’re prepared from pathogen that have been inactivated or killed by heat or UV rays.

Genetically engineered vaccines: they’re made by modifying the pathogen’s genes by keeping only non dangerous genes or by replacing dangerous genes with harmless ones.