Immunity System

Which of the following is a substance usually prepared from killed or weaken pathogens?

• White blood cells

• Antibodies

• Lymph

• Vaccines

This graph refer to

• Passive natural immunity

• Passive artificial immunity

• Active natural immunity

• Active artificial immunity

Following are the causes that weaken the immune system except

• Stress

• Exposure to polluted air

• Exposure to pesticides

• Healthy diet

Special proteins produced by the body to attack foreign invaders.

• antibodies

• antigen

Vaccines contain weakened or dead parts of antigens. 

• True

• False

He belived that having cowpox gave people ___________ from smallpox

• Immunity

• Vaccinaton

• Innoculation

• Innocence

What is the body's first line of defence against infection?

• Physical barriers

• White blood cells

• Blood plasma

• Red blood cells

__________ immunity is when the bodies makes its own antibodies.

• passive

• active

• cell mediated

• false

Which of the following cells are primarily responsible for producing antibodies?

• A) T cells

• B) B cells

• C) Red blood cells

• D) Platelets

What is the role of the thymus in the immune system?

• A) Produces red blood cells

• B) Filters pathogens from the blood

• C) Matures T cells

• D) Produces antibodies