8th Grade Unit 7 Extra Credit

About 80% of infectious disease is spread by hand contact.

• True

• False

The three lines of defense your body has against disease include all except

• physical and chemical defenses.

• inflammation.

• immune system.

• scarring.

Antibodies are produced by

• T Cells

• B Cells

• Red Blood Cells

• Lymph Nodes

Which statement is about the flu?

•  It is a bacterial disease.

• There is never a fever associated with the flu.

• It is spread by contact with infected people or objects.

• It is less serious than the cold virus.

People die from colds each year.

• True

• False

Physical lines of defense include

• skin, cielia, and mucous membranes

• hair

• nails

• teeth

Infectious diseases are caused by organisms or viruses that enter and multiply within the human body.

• True

• False

Your body can get antibodies from

• immunization

• being exposed to the virus or antibody and having your immune system make it.

• None of the above

• All of the above

Immunity is

• the ability to produce red blood cells.

• white blood cells.

• your body's ability to destroy pathogens that it has previously encountered before the pathogens are able to cause disease.

• your body's general response to injury.immunity

Have you taken your Unit 7 Test yet?

• Yes

• No