QUESTIONS AND THEIR REVIEWED
ANSWERS
What two types of hearing loss are associated with
noise?
A) acoustic trauma and noise induced
B) high frequency and low frequency
C) high frequency and acoustic trama
D) noise induced and low frequency
Ans: A- acoustic trauma and noise induced
A hypersensitivity reaction that produces an allergic
response is called:
A) hemolytic shosh
B) anaphylaxis
C) necrotizing vasculitis
D) systemic erythematosus
Ans: B- anaphylaxis
Which cytokine is produced and released from virally
infected host cells?
A) IL-1
B) IL-10
C) tumor necrosis factor-alpha (TNF-a)
D) interferon-alpha (IFN-a)
,Ans: D- interferon-a
Which T-lymphocyte phenotype is the key determinant
of childhood asthma?
A) CD4 helper T1 (Th1) lymphocytes
B) CD4 helper T2 (Th2) lymphocytes
C) CD8 cytotoxic T (Tc) lymphocytes
D) memory T lymphocytes
Ans: B- CD4 helper T2 (Th2) lymphocytes
Some older adults have impaired inflammation and
wound healing because of which problem?
A) the circulatory system cannot adequately perfuse
tissues
B) complement and chemotaxis are deficient
C) underlying chronic illnesses exist
D) the number of mast cells is insufficient
Ans: C- underlying chronic illnesses exist
The role of cytokines in cell reproduction is that they:
A) provide growth factor for tissue growth and
development
B) block the progress of cell reproduction through the
cell cycle
C) restrain cell growth and development
D) provide nutrients for cell growth and development
Ans: A- provide growth factor for tissue growth and
development
Which characteristic is the most important
determinant of immunogenicity when considering the
antigen?
, A) size
B) foreignness
C) complexity
D) quantity
Ans: B- foreignness
How do cells receive communication from the
extracellular fluid surrounding them?
A) through the protein channel (gap junction)
B) via the plasma membrane-bound signaling
molecules (involving receptors)
C) through hormone secretion such as
neurotransmitters
D) by chemical messengers such as ligands
Ans: D- by chemical messengers such as ligands
In a normal, nonmutant state, an oncogene is referred
to as a:
A) basal cell
B) target cell
C) caretaker gene
D) proto-oncogene
Ans: D- proto-oncogene
What is the primary cause of respiratory distress
syndrome (RDS) of the newborn?
A) immature immune system
B) small alveoli
C) surfactant deficiency
D) anemia