NU 606 EXAM 2 (REGIS) NEWEST 2025/ 2026 ACTUAL
EXAM TEST BANK| NU606 ADVANCED
PATHOPHYSIOLOGY EXAM 2 REVIEW WITH COMPLETE
450 REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADE A+ (BRAND NEW!!)
1. A patient presents with fever, hypotension, and altered
mental status following a urinary tract infection. Blood
cultures are positive for Escherichia coli. Which
pathophysiologic process best explains this presentation?
a) Localized inflammation with neutrophil infiltration
b) Systemic inflammatory response syndrome (SIRS) due to
bacterial endotoxins
c) Type I hypersensitivity reaction to bacterial antigens
d) Direct bacterial invasion of the central nervous system
Answer: b
1
,Rationale: This presentation describes sepsis, which is a systemic
inflammatory response to infection. Gram-negative bacteria like E.
coli release endotoxins (lipopolysaccharides) that trigger
widespread release of cytokines, leading to vasodilation, capillary
leakage, and end-organ dysfunction .
2. Which statement accurately distinguishes bacterial
exotoxins from endotoxins?
a) Exotoxins are composed of lipids and polysaccharides;
endotoxins are proteins
b) Exotoxins are released during bacterial growth; endotoxins
are released when bacteria lyse
c) Exotoxins cause fever only; endotoxins cause specific tissue
damage
d) Exotoxins are not antigenic; endotoxins stimulate strong
immune responses
Answer: b
2
,Rationale: Exotoxins are proteins released by bacteria during
growth that damage host cells, while endotoxins are
lipopolysaccharides (no protein) released when Gram-negative
bacteria lyse. Endotoxins cause host immune reactions, including
fever and shock .
3. A patient with HIV has a CD4 count of 180 cells/mL and
develops pneumonia caused by Pneumocystis jirovecii. This
organism is best described as:
a) A primary pathogen causing disease in healthy hosts
b) An opportunistic pathogen that causes disease only when
immunity is compromised
c) A prion that causes neurodegenerative disease
d) A virus that integrates into the host genome
Answer: b
*Rationale: Opportunistic pathogens cause disease primarily in
immunocompromised hosts. Pneumocystis jirovecii pneumonia is an
3
, AIDS-defining illness that occurs when CD4 counts drop below
200 cells/mL .*
4. Which statement about prions is correct?
a) Prions contain RNA as their genetic material
b) Prions are inactivated by standard disinfection procedures
c) Prions cause disease by inducing normal proteins to misfold
d) Prion diseases typically present with acute fever and rash
Answer: c
Rationale: Prions are infectious proteins with no genome. They
cause disease by converting normal cellular proteins into abnormal
conformations, leading to spongiform changes in the brain. Prion
diseases include Creutzfeldt-Jacob Disease and Mad Cow Disease,
and they cause progressive cognitive impairment .
5. Which cellular component is the primary target of the
human immunodeficiency virus (HIV)?
a) CD8+ cytotoxic T lymphocytes
4
EXAM TEST BANK| NU606 ADVANCED
PATHOPHYSIOLOGY EXAM 2 REVIEW WITH COMPLETE
450 REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADE A+ (BRAND NEW!!)
1. A patient presents with fever, hypotension, and altered
mental status following a urinary tract infection. Blood
cultures are positive for Escherichia coli. Which
pathophysiologic process best explains this presentation?
a) Localized inflammation with neutrophil infiltration
b) Systemic inflammatory response syndrome (SIRS) due to
bacterial endotoxins
c) Type I hypersensitivity reaction to bacterial antigens
d) Direct bacterial invasion of the central nervous system
Answer: b
1
,Rationale: This presentation describes sepsis, which is a systemic
inflammatory response to infection. Gram-negative bacteria like E.
coli release endotoxins (lipopolysaccharides) that trigger
widespread release of cytokines, leading to vasodilation, capillary
leakage, and end-organ dysfunction .
2. Which statement accurately distinguishes bacterial
exotoxins from endotoxins?
a) Exotoxins are composed of lipids and polysaccharides;
endotoxins are proteins
b) Exotoxins are released during bacterial growth; endotoxins
are released when bacteria lyse
c) Exotoxins cause fever only; endotoxins cause specific tissue
damage
d) Exotoxins are not antigenic; endotoxins stimulate strong
immune responses
Answer: b
2
,Rationale: Exotoxins are proteins released by bacteria during
growth that damage host cells, while endotoxins are
lipopolysaccharides (no protein) released when Gram-negative
bacteria lyse. Endotoxins cause host immune reactions, including
fever and shock .
3. A patient with HIV has a CD4 count of 180 cells/mL and
develops pneumonia caused by Pneumocystis jirovecii. This
organism is best described as:
a) A primary pathogen causing disease in healthy hosts
b) An opportunistic pathogen that causes disease only when
immunity is compromised
c) A prion that causes neurodegenerative disease
d) A virus that integrates into the host genome
Answer: b
*Rationale: Opportunistic pathogens cause disease primarily in
immunocompromised hosts. Pneumocystis jirovecii pneumonia is an
3
, AIDS-defining illness that occurs when CD4 counts drop below
200 cells/mL .*
4. Which statement about prions is correct?
a) Prions contain RNA as their genetic material
b) Prions are inactivated by standard disinfection procedures
c) Prions cause disease by inducing normal proteins to misfold
d) Prion diseases typically present with acute fever and rash
Answer: c
Rationale: Prions are infectious proteins with no genome. They
cause disease by converting normal cellular proteins into abnormal
conformations, leading to spongiform changes in the brain. Prion
diseases include Creutzfeldt-Jacob Disease and Mad Cow Disease,
and they cause progressive cognitive impairment .
5. Which cellular component is the primary target of the
human immunodeficiency virus (HIV)?
a) CD8+ cytotoxic T lymphocytes
4
