Biology Chapter 17

How could you experimentally determine that a newly discovered disease-causing agent is a virus or a bacterium?

• Test to see if it is killed by changes in salt concentration.

• Test to see if it is metabolically active outside a living cell.

• Test to see if is killed by high temperatures.

• Test to see if is killed by changes in pH.

Fill in the blank with the correct answer by typing in the box. (a)   cells allow the body to remain immune to a pathogen that the immune system has encountered in the past.

Fill in the blank with the correct answer by typing in the box. If a child is born without functioning B or T cells, the child will suffer from a kind of (a)   .

Immunocompetent T and B cells remain in bone marrow and the thymus, respectively, until they are needed by the body to fight an infection.

• true

• false

Fill in the blank with the correct answer by typing in the box. Chemical messengers called (a)   send feedback to the nervous system, which causes the symptoms of feeling sick, such as muscle pain and running a fever.

What can result when the immune system no longer recognizes self-antigens?

• allergy attack

• autoimmune disorder

• hypersensitivity

• complement activation

Allergies are caused when antibodies create an immune response that targets the body's own cells or tissues.

• true

• false

Localized redness and swelling, along with warmth and pain are associated with which of the following?

• the natural killer cell response

• the inflammatory response

• the complement response

• the adaptive immune response

Monocytes circulate in the blood and lymph until they find an infected tissue, then they become what type of cell?

• macrophage

• mast cell

• B cell

• T cell

Which of the following can be treated post-infection with a vaccine?

• herpes

• polio

• ebola

• flu