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