PCOL 838 Final Exam 2024: Actual Questions & Verified Answers Guide

1|Page



PCOL 838 FINAL EXAM NEWEST WITH ACTUAL
QUESTIONS AND CORRECT DETAILED
ANSWERS|ALREADY GRADED A+ 100%
GUARANTEED PASS!




What is a vector in terms of infectious disease? -
.....ANSWER ...✔✔ An organism that carries a
pathogen


Which of the following is a common example of a vector
pathogen?
a.) Malaria
b.) COVID-19
c.) Ebola
d.) Tuberculosis - .....ANSWER ...✔✔ a.) Malaria


Which of the following are possible types of pathogens?
a.) Fungus
b.) Bacteria
c.) Protozoa
d.) Viruses

,2|Page



e.) Misfolded proteins
f.) All of the above - .....ANSWER ...✔✔ f.) All of the
above


Kuru and mad cow disease is an example of what type
of pathogen? - .....ANSWER ...✔✔ Misfolded proteins


What is the difference between zoonotic pathogens and
vector pathogens? - .....ANSWER ...✔✔ Zoonotic
pathogen = Microorganisms--> Animals --> Humans
Vector pathogens = Microorganisms --> Humans


Ixode ticks can transmit disease to humans as vectors.
During which season can they transmit the disease? -
.....ANSWER ...✔✔ Summer and Spring when they are
in the nymph stage


What is the zoonotic host of the Ixode tick? -
.....ANSWER ...✔✔ White-footed mouse


Which of the following comprises the innate immune
system? Select all that apply.
a.) T cells

,3|Page



b.) B cells
c.) Dendritic cells
d.) Neutrophils
e.) Basophils
f.) Eosinophils
g.) Natural Killer cells
h.) Macrophages - .....ANSWER ...✔✔ C, D, E, F, G,
and H


Which of the following comprises the adaptive immune
system? Select all that apply.
a.) T cells
b.) B cells
c.) Dendritic cells
d.) Neutrophils
e.) Basophils
f.) Eosinophils
g.) Natural Killer cells
h.) Macrophages - .....ANSWER ...✔✔ A and B
T cells and B cells

, 4|Page



What is in the stratum corneum layer that helps it act as
a barrier to pathogens? Select all that apply.
a.) CD8+ Tcells
b.) Commensal microbes
c.) Low pH
d.) Antimicrobial properties
e.) Langerhans cells
f.) Lipids
g.) Macrophages - .....ANSWER ...✔✔ B, C, D, and F
CD8+ T cells, Commensal microbes, Low pH,
antibacterial properties, and Lipids


Which of the following are considered to be barrier
defenses in preventing infection?
a.) Skin
b.) Respiratory tract
c.) Digestive tract
d.) Reproductive tract
e.) All of the above - .....ANSWER ...✔✔ e.) All of the
above


Which of the following pathways require an antibody?
a.) The classical pathway