Test 4
You scored 94.22 out of 106
Question 1
Your answer is CORRECT.
All of the following statements are correct about microbial colonization of the human
body except:
A) The skin is a highly selective niche for certain microbes.
B) Certain members of the oral microbiota can form biofilms on teeth causing
cavities.
C) The cardiovascular system possesses normal flora that are strictly commensal
species.
D) There are more anaerobes in the colon than aerobes.
E) Intestinal bacteria are generally likely to be more acid tolerant.
Question 2
Your answer is INCORRECT.
Staphylococcus aureus is a normal skin inhabitant that is harmless unless a break in
the skin occurs; under these conditions, this bacterium can cause an infection. For this
reason, S. aureus is referred to as a/an:
A) opportunistic pathogen
B) commensal
C) parasite
D) primary pathogen
E) mutualist
Question 3
Your answer is CORRECT.
Which of the following is not associated with innate immunity?
A) Interferon secretion
, B) Action of natural killer cells
C) Activation of cytotoxic T cells
D) Engulfment of bacteria by neutrophils
E) All are associated with innate immunity
Question 4
Your answer is CORRECT.
Which of the following is not an integral part of the inflammatory process?
A) dilation of blood vessels
B) release of histamines, bradykinin, and prostaglandins
C) extravasation
D) decrease in the permeability of blood vessels in the area
E) release of cytokines to attract cells of the immune system
Question 5
Your answer is CORRECT.
Natural killer cells target:
A) infected cells that have lost MHC surface proteins
B) bacterial cells that are coated with complement
C) infected cells bound with antibody
D) extracellular viruses
E) All the above
Question 6
Your answer is CORRECT.
Opsonization is a process whereby the innate and adaptive immune mechanisms work
together:
A) to phagocytize an invader
You scored 94.22 out of 106
Question 1
Your answer is CORRECT.
All of the following statements are correct about microbial colonization of the human
body except:
A) The skin is a highly selective niche for certain microbes.
B) Certain members of the oral microbiota can form biofilms on teeth causing
cavities.
C) The cardiovascular system possesses normal flora that are strictly commensal
species.
D) There are more anaerobes in the colon than aerobes.
E) Intestinal bacteria are generally likely to be more acid tolerant.
Question 2
Your answer is INCORRECT.
Staphylococcus aureus is a normal skin inhabitant that is harmless unless a break in
the skin occurs; under these conditions, this bacterium can cause an infection. For this
reason, S. aureus is referred to as a/an:
A) opportunistic pathogen
B) commensal
C) parasite
D) primary pathogen
E) mutualist
Question 3
Your answer is CORRECT.
Which of the following is not associated with innate immunity?
A) Interferon secretion
, B) Action of natural killer cells
C) Activation of cytotoxic T cells
D) Engulfment of bacteria by neutrophils
E) All are associated with innate immunity
Question 4
Your answer is CORRECT.
Which of the following is not an integral part of the inflammatory process?
A) dilation of blood vessels
B) release of histamines, bradykinin, and prostaglandins
C) extravasation
D) decrease in the permeability of blood vessels in the area
E) release of cytokines to attract cells of the immune system
Question 5
Your answer is CORRECT.
Natural killer cells target:
A) infected cells that have lost MHC surface proteins
B) bacterial cells that are coated with complement
C) infected cells bound with antibody
D) extracellular viruses
E) All the above
Question 6
Your answer is CORRECT.
Opsonization is a process whereby the innate and adaptive immune mechanisms work
together:
A) to phagocytize an invader
