BIO 242 EXAM 3 Questions And Answers With
Complete Solutions
Which lines of defense would be considered nonspecific?
✅First line of defense
Second line of defense
Differentiate between components of first and second line
defense ✅FIRST: Physical and Chemical barriers
SECOND: phagocytosis, inflammation, fever, antimicrobial
proteins
FLOD: lysozome ✅is secreted in tears in saliva
What human body region is protected by fatty acids, acidic
pH, lactic acid, and tough cell barrier with its own normal
biota? ✅skin
The sweat doud on skin and saliva in the mouth attributed
to what line of defense? ✅First line
Eosinophils ✅attack parasitic helminths
Basophils ✅- make up less than .5% of circulating WBCs
- granules contain histamine
When monocytes migrate from the blood out to the
tissues, they are transformed by inflammatory mediators
to develop into________ ✅Macrophages
The third line of defense against foreign invaders van be
describes as having _______ and _______ ✅Specificity
and Memory
A foreign molecule that causes a specific immune
response is an ______ ✅Antigen
___ cells are part of the humoral immunity and mature in
the BM ✅B cells
____ cells are part of the cell mediated immunity and
mature in the thymyus ✅T cells
The most abundant class of antibodies in serum is ✅IgG
_____ cells secrete antibodies ✅Plasma
IgG ✅monomer
IgA ✅dimer
IgM ✅pentamer
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