N
URS 6501 ADVANCED
PATHOPHYSIOLOGY
ACTUAL EXAM WITH
COMPLETE QUESTIONS
AND CORRECT DETAILED
ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED
A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!|HIGH YIELD
QUESTIONS AND
ANSWERS|||2026!!!!!!
A runner has depleted oxygen stores during
intense exercise. Which metabolic pathway
allows continued ATP production?
A. Oxidative phosphorylation
B. Glycogenesis
C. Anaerobic glycolysis
D. Beta-oxidation
Correct Answer: C. Anaerobic glycolysis
Rationale: When oxygen is insufficient, cells
shift from aerobic metabolism to anaerobic
,glycolysis to rapidly generate ATP. This
pathway breaks down glucose into pyruvate and
then lactate, allowing energy production without
oxygen. Although inefficient and producing
lactic acid, it is essential for short-term survival
during high demand states such as intense
exercise.
What immediate ionic event triggers the
initiation of an action potential?
A. Potassium influx
B. Calcium efflux
C. Sodium influx
D. Chloride influx
Correct Answer: C. Sodium influx
Rationale: Action potentials begin when
voltage-gated sodium channels open, allowing
sodium to rapidly enter the cell. This shifts the
membrane potential from negative to positive
(depolarization), initiating electrical conduction.
Potassium channels open later for
repolarization.
,A male with Klinefelter syndrome will most
likely have which karyotype?
A. XO
B. XY
C. XXY
D. XYY
Correct Answer: C. XXY
Rationale: Klinefelter syndrome results from an
extra X chromosome in males (47, XXY). This
leads to hypogonadism, infertility,
gynecomastia, and tall stature due to altered
hormonal regulation.
In genetic pedigree analysis, what is a
proband?
A. Carrier of a mutation
B. First affected individual identified
C. Unaffected family member
D. Deceased ancestor
Correct Answer: B. First affected individual
identified
Rationale: The proband is the initial individual
in a family who brings attention to a genetic
, disorder. This person is used as the starting
point for constructing a pedigree to trace
inheritance patterns.
Neurofibromatosis shows varying severity
among affected individuals. Which genetic
concept explains this?
A. Penetrance
B. Codominance
C. Expressivity
D. Epistasis
Correct Answer: C. Expressivity
Rationale: Variable expressivity refers to
differences in clinical severity among
individuals with the same genotype. In
neurofibromatosis, symptoms can range from
mild skin lesions to severe neurologic
complications.
Prader-Willi syndrome is best classified as
which genetic mechanism?
A. Autosomal dominant inheritance
B. Mitochondrial inheritance
C. Gene imprinting
URS 6501 ADVANCED
PATHOPHYSIOLOGY
ACTUAL EXAM WITH
COMPLETE QUESTIONS
AND CORRECT DETAILED
ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED
A+| ||PROFESSOR VERIFIED||
||BRANDNEW!!!|HIGH YIELD
QUESTIONS AND
ANSWERS|||2026!!!!!!
A runner has depleted oxygen stores during
intense exercise. Which metabolic pathway
allows continued ATP production?
A. Oxidative phosphorylation
B. Glycogenesis
C. Anaerobic glycolysis
D. Beta-oxidation
Correct Answer: C. Anaerobic glycolysis
Rationale: When oxygen is insufficient, cells
shift from aerobic metabolism to anaerobic
,glycolysis to rapidly generate ATP. This
pathway breaks down glucose into pyruvate and
then lactate, allowing energy production without
oxygen. Although inefficient and producing
lactic acid, it is essential for short-term survival
during high demand states such as intense
exercise.
What immediate ionic event triggers the
initiation of an action potential?
A. Potassium influx
B. Calcium efflux
C. Sodium influx
D. Chloride influx
Correct Answer: C. Sodium influx
Rationale: Action potentials begin when
voltage-gated sodium channels open, allowing
sodium to rapidly enter the cell. This shifts the
membrane potential from negative to positive
(depolarization), initiating electrical conduction.
Potassium channels open later for
repolarization.
,A male with Klinefelter syndrome will most
likely have which karyotype?
A. XO
B. XY
C. XXY
D. XYY
Correct Answer: C. XXY
Rationale: Klinefelter syndrome results from an
extra X chromosome in males (47, XXY). This
leads to hypogonadism, infertility,
gynecomastia, and tall stature due to altered
hormonal regulation.
In genetic pedigree analysis, what is a
proband?
A. Carrier of a mutation
B. First affected individual identified
C. Unaffected family member
D. Deceased ancestor
Correct Answer: B. First affected individual
identified
Rationale: The proband is the initial individual
in a family who brings attention to a genetic
, disorder. This person is used as the starting
point for constructing a pedigree to trace
inheritance patterns.
Neurofibromatosis shows varying severity
among affected individuals. Which genetic
concept explains this?
A. Penetrance
B. Codominance
C. Expressivity
D. Epistasis
Correct Answer: C. Expressivity
Rationale: Variable expressivity refers to
differences in clinical severity among
individuals with the same genotype. In
neurofibromatosis, symptoms can range from
mild skin lesions to severe neurologic
complications.
Prader-Willi syndrome is best classified as
which genetic mechanism?
A. Autosomal dominant inheritance
B. Mitochondrial inheritance
C. Gene imprinting
