Immune System

What is the body's first line of defense against infection by foreign organisms?

• antibodies

• lymph nodes

• white blood cells

• the skin

Disease-causing microorganism, such as a bacterium or virus.

• pathogen

• allergen

• prion

• antigen

A nonspecific defensive response of the body to tissue injury characterized by dilation of blood vessels and swelling.

• immunity

• interferon

• immunization

• inflammation

This type of cell inspects cells for antigens and kills any cells that display the foreign antigens.

• Macrophage

• T Cells

• B Cells

What do antibodies attach to on the pathogen?

• Anti inflammatory

• Antigens

• Antiseptic

• Antibodies

What do B cells produce?

• antigens

• macrophages

• T cells

• antibodies

Antibodies are chains of...

• Lipids

• Carbohydrates

• Proteins

• Nucleic acid

What is the first line of defense your body has against pathogens?

• B-lymphocytes

• Antibodies

• Antigens

• Skin and mucus

Which of the following regarding viruses and bacteria is not true?

• Viruses are non-living

• Bacteria are living

• Viruses can reproduce outside of a host cell

• Antibiotics are ineffective against viruses

Vaccinations work by...

• Strengthening the immune system by chemically changing B-cells

• Tricking the body into thinking the needle is a pathogen

• Injecting dead or weakened bacteria or viruses (or proteins from them) into the bloodstream to trigger the production of antibodies

• Vaccines don't work and are just the government's way of injecting microchips into the population so they can keep track of us.