Question

Vaccines prevent disease by
A. bringing bacteria to infect healthy cells.
B. containing specific T lymphocytes.
C. combining with pathogens to inactivate them.
D. preparing the immune system to recognize and destroy pathogens.

Answer 1

D

Answer 2

Vaccines contain a part or weakened bacteria/virus which when in the body, the immune system will be able to recognize and destroy if you do encounter it in the future

Answer 3

No vaccines commonly contain antigens of a particular bacteria or virus. I think it is a common misconception that vaccines contain weakened bacteria or viruses.

Answer 4

these antigens which are common to the bacteria or virus we are inoculating against, usually a protein, normally triggers our body to develop antibodies to the introduced antigens.

antibodies are basically tags that stick to the antigens and tell immune cells to destroy the object they have tagged. Thus leading to your immune system destroying that particular bacteria or virus qucikly if it ever enters the host.

Answer 5

quickly*

Answer 6

Vaccines are used for "prevention," but they do not totally ensure the protection from bacteria infection. They must develop resistance; therefore D because once the immune system develops resistance it will be able to recognize and destroy the pathogens.

Answer 7

D.