MCB 3023 Exam 4 | UPDATED Questions with 100% Verified Answers
Question:
Which is an example of innate immunity?
Answer:
The removal of a bacterial cell in the lungs by a resident macrophage
Question:
For most pathogenic bacteria, what is the first step it takes to
facilitate entry into its host?
Answer:
attachment
Question:
Pathogenic E. coli strain O157:H7 evolved from a non-
pathogenic strain as a result of this genetic change.
Answer:
The acquisition of virulence genes via horizontal gene transfer
Question:
All of the following are components that may be used by a
pathogen for attachment to a host cell EXCEPT:
Answer:
cellulases
Question:
In order to cause a fast spreading disease, successful
infectious pathogens must be able to do ALL of the following
EXCEPT:
Answer:
kill the host
Question:
How does vertical transmission of a pathogen occur?
, Answer:
from mother to offspring
Question:
An attachment structure which aids in overcoming the charge
repulsion between host/microbe cells is:
Answer:
fimbriae
Question:
Which of these is NOT a mechanism of horizontal gene
transfer?
Answer:
inherited DNA from mother cell to daughter cell
Question:
The Ebola virus is transmitted by a ____________ mechanism
Answer:
zoonotic
Question:
What are the two main functions of B cells?
Answer:
Activation of helper T cells and antibody production
Question:
Evolution of viruses by reassortment causes dramatic changes
to the virus. This is referred to as
Answer:
antigenic shift
Question:
What does a high case-to-infection ratio (CI) indicate
Question:
Which is an example of innate immunity?
Answer:
The removal of a bacterial cell in the lungs by a resident macrophage
Question:
For most pathogenic bacteria, what is the first step it takes to
facilitate entry into its host?
Answer:
attachment
Question:
Pathogenic E. coli strain O157:H7 evolved from a non-
pathogenic strain as a result of this genetic change.
Answer:
The acquisition of virulence genes via horizontal gene transfer
Question:
All of the following are components that may be used by a
pathogen for attachment to a host cell EXCEPT:
Answer:
cellulases
Question:
In order to cause a fast spreading disease, successful
infectious pathogens must be able to do ALL of the following
EXCEPT:
Answer:
kill the host
Question:
How does vertical transmission of a pathogen occur?
, Answer:
from mother to offspring
Question:
An attachment structure which aids in overcoming the charge
repulsion between host/microbe cells is:
Answer:
fimbriae
Question:
Which of these is NOT a mechanism of horizontal gene
transfer?
Answer:
inherited DNA from mother cell to daughter cell
Question:
The Ebola virus is transmitted by a ____________ mechanism
Answer:
zoonotic
Question:
What are the two main functions of B cells?
Answer:
Activation of helper T cells and antibody production
Question:
Evolution of viruses by reassortment causes dramatic changes
to the virus. This is referred to as
Answer:
antigenic shift
Question:
What does a high case-to-infection ratio (CI) indicate
