Immunity

Antibiotics work against most

• Bacteria
• Bacteria & Viruses
• Vaccines
• Viruses

Special proteins produced by the body to attack foreign invaders.

• antibodies
• antigen

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

• Physical barriers

• White blood cells

• Blood plasma

• Red blood cells

Vaccines contain weakened or dead parts of antigens. 

• True
• False

The body detects pathogens by their...

• Antigens
• Antibodies
• Histamines
• DNA

Viruses attack host cells injecting their genetic material in order to use host cell machinery to make viral copies

• True

• False

The body's second line of defense is

• B and T cells

• Skin and mucus membranes

• Antibodies

• Inflammation

Viruses are not considered living organisms even though they have several characteristics of living things.  What is the reason viruses are not considered alive?

• They are too small.
• A virus is a living organism.
• They need a host to reproduce.
• Viruses do not have DNA/genetic material.

__________ immunity is when the bodies makes its own antibodies.

• passive
• active
• cell mediated
• false

Antibodies are made by...

• Your own cells.
• The pathogen.