BIOS 255 EXAM 3 ACTUAL EXAM VERSION A, B AND STUDY
GUIDE QUESTIONS WITH CORRECT VERIFIED SOLUTIONS
LATEST 2024-2025
BIOS 255 EXAM 3 VERSION 1
What are two parts of the third line of defense? - CORRECT ANSWER✔✔Cell
mediated immunity
Antibody mediated immunity
What are the two types of non phagocyte killing - CORRECT
ANSWER✔✔Granulocytes( neutrophils and eosinophils)and nk cells
What are the granulocytes that don't use phagocytosis? - CORRECT
ANSWER✔✔Neutrophils bacteria
Eosinophils parasitic worms, allergies and inflammation
Both by means of chemical release
How do nk cells work? - CORRECT ANSWER✔✔Recognition and attachment
Secretion of performing and granzymes
Lysis and detachment
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How Is the process of phagocytosis? - CORRECT ANSWER✔✔Chemotaxis
Adhesion
Engulfment
Formation of phagosome
Add digestive enzymes to vesicle with the pathogen killing the pathogen
Endocytosis of the residual body
What are the four cardinal signs of inflammation? - CORRECT
ANSWER✔✔redness, heat, swelling, pain
What are pyrogens? - CORRECT ANSWER✔✔Cause a fever
What are the two types of pyrogens? - CORRECT ANSWER✔✔exogenous and
endogenous
Exogenous - CORRECT ANSWER✔✔Produced from outside of the cell
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Endogenous - CORRECT ANSWER✔✔Released from body cells like neutrophils and
macrophages (ex. Interleukin I)
What are interferons? - CORRECT ANSWER✔✔interfere with viral infections of
host cells
What are complement proteins? - CORRECT ANSWER✔✔Cascade of proteins join
to form a membrane attach complex that lyses the membrane of the pathogen
Where is cell mediated immunity carried out by - CORRECT ANSWER✔✔T cell
lymphocytes
Where is antibody mediated immunity carried out by? - CORRECT ANSWER✔✔B
cell lymphocytes
What is cell mediated immunity triggered by - CORRECT ANSWER✔✔Endogenous
antigens
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What is antibody mediated immunity triggered by - CORRECT
ANSWER✔✔Exogenous antigens
What leukocytes are initiated during specific immunity - CORRECT
ANSWER✔✔Lymphocytes
What are epitopes? - CORRECT ANSWER✔✔the part of an antigen molecule to
which an antibody attaches itself
Where are antigens found? - CORRECT ANSWER✔✔Found on some food, dust
Where are antigens produced - CORRECT ANSWER✔✔They are chemicals
produced by the pathogen
What are the functions of the immune system? - CORRECT ANSWER✔✔Protect
the body from and fight off pathogens
Innate immunity - CORRECT ANSWER✔✔Immune defense mechanisms you are
born with
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