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Microbiology Chapter 16 Test Bank 2024/2025 (100% verified)
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Microbiology Chapter 16 Test Bank 2024/2025 (100% verified)
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Microbiology Chapter 16 Test BankInnate immunity
A) is slower than adaptive immunity in responding to pathogens.
B) is nonspecific and present at birth.
C) involves a memory component.
D) involves T cells and B cells.
E) provides increased susceptibility to disease - ANSis nonspecific and present at birth
All of the following protect the skin and mucous membranes from infection EXCEPT
A) multiple layers of cells.
B) tears.
C) saliva.
D) HCl.
E) the "ciliary escalator." - ANSHCl
The function of the "ciliary escalator" is to
A) propel inhaled dust and microorganisms toward the mouth, away from the lower respiratory
tract.
B) remove microorganisms from the gastrointestinal tract.
C) remove microorganisms from the lower respiratory tract.
D) trap microorganisms in mucus in the upper respiratory tract.
E) trap inhaled dust and microorganisms in mucus and propel it away from the lower respiratory
tract. - ANStrap inhaled dust and microorganisms in mucus and propel it away from the lower
respiratory tract
Which of the following exhibits the highest phagocytic activity?
A) eosinophils
B) erythrocytes
C) macrophages
D) basophils
E) neutrophils - ANSmacrophages
TLRs attach to all of the following EXCEPT
A) AMPs.
B) flagellin.
C) LPS.
D) PAMPs.
E) peptidoglycan - ANSAMPs
A differential cell count is used to determine each of the following EXCEPT
A) the total number of white blood cells.
, B) the numbers of each type of white blood cell.
C) the number of red blood cells.
D) leukocytosis.
E) leukopenia - ANSthe number of red blood cells
The complement protein cascade is the same for the classical pathway, alternative pathway,
and lectin pathway after the point in the cascade where the activation of ________ takes place.
A) C1
B) C2
C) C3
D) C5
E) C6 - ANSC3
All of the following increase blood vessel permeability EXCEPT
A) kinins.
B) prostaglandins.
C) lysozymes.
D) histamine.
E) leukotrienes - ANSlysozyme
A child falls and suffers a deep cut on her leg. The cut went through her skin and she is
bleeding. Which of the following defense mechanisms will participate in eliminating
contaminating microbes?
A) mucociliary escalator
B) normal skin flora
C) phagocytosis in the inflammatory response
D) acidic skin secretions
E) lysozyme - ANSphagocytosis in the inflammatory response
Margination refers to
A) the adherence of phagocytes to microorganisms.
B) the chemotactic response of phagocytes.
C) adherence of phagocytes to the lining of blood vessels.
D) dilation of blood vessels.
E) the movement of phagocytes through walls of blood vessels - ANSadherence of phagocytes
to the lining of blood vessels
Which of the following statements is TRUE?
A) All three types of interferons have the same effect on the body.
B) Alpha interferon promotes phagocytosis.
C) Gamma interferon causes bactericidal activity by macrophages.
D) Alpha interferon acts against specific viruses.
E) Beta interferon attacks invading viruses - ANSgamma interferon causes bactericidal activity
by macrophages
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