Biology 1409 Chapter 29 Reading Questions

A phagocyte is a

Cell that engulfs other cells and debris

In a process called ________, an army of plasma cells and memory cells are produced from a properly stimulated B cells

Clonal selection

The substance that when activated triggers a chain reaction that punctures bacterial cell membranes is

Complement protein

The primary function of a vaccine is to

Create immunological memory without causing disease

White blood cells are produced

From bone marrow stem cells

The "master cells" of the immune system that initiate and coordinate the adaptive immune response are

Helper T cells

You would know that a viral infection is ongoing in a body if you detect high levels of

Interferon

B cells or T cells are

Lymphocytes

A primary "antigen presenting cell," a cell that presents an antigen to a helper T cell, is a

Macrophage

A cell that does not circulate in blood, but instead settles in tissues near the skin and in the digestive tract, producing and releasing histamine when tissue is damaged, is a

Mast cell

Special cells produced by the immune system that are progeny of properly stimulated B cells and are antibody-producing factories are

Plasma cells

Physical and chemical barriers that form the first line of innate defense include

All answers are correct

Which is a reason why fever is considered a defense mechanism?

All answers are correct

Which is correct about primary and secondary immune responses?

All answers are correct

An exaggerated attack on a harmless antigen by an overly sensitive immune system is termed an

Allergy

Which is an example of active immunity?

Antibodies produced from a vaccine, antibodies produced when the flu strikes

A Y-shaped protein that is produced in response to a specific antigen and recognizes these antigens is an

Antibody

What is not part of the innate defense response?

Antibody production

Immunological memory results from the production of

Both B and T cells

Histamine triggers vasodilation and leakiness in blood vessels during inflammation. Why would this be beneficial in fighting an infection by a pathogen?

Both increased number of white blood cells and their migration to site of infection