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WGU D115
WGU D115 Unit 2 | Advanced Pathophysiology for the
Advanced Practice Nurse | Qs & As| Grade A| 100% Correct
Latest Update (2025/ 2026)
How can an X-linked recessive disease skip generations?
Mothers cannot pass X-linked genes to their sons.
Females are hemizygous for the X chromosome.
The disease can be transmitted through female carriers.
These diseases need only one copy of the gene in females. - ANS ✓The disease can be
transmitted through female carriers.
Since females have two copies of the X chromosome, the mother may provide an
unaffected X to a daughter or son. Furthermore, a daughter may not show signs of the
disease because she has the other X (the only X the father can give to a female) to cancel
it out.
Which type of risk is referred to as the ratio of the disease rate among the entire
population to the disease rate in an unexposed population?
Relative
Attributable
Contingency
Causal - ANS ✓Relative risk is a ratio of probability, not an actual occurrence of disease.
What are the empirical risks for most multifactorial diseases based on?
Direct observation
Chromosomal testing
WGU D115
, 2
WGU D115
Relative risks
Liability thresholds - ANS ✓Many factors from lifestyle to genetics affect multifactorial
diseases. Observation and evaluation of each case individually provides the most
thorough and accurate assessment.
What refers to the silenced gene of a gene pair.
Imprinted, activated, mutated, altered - ANS ✓The imprinted gene is the silent gene of a
gene pair.
What is the primary reason that some older adults have impaired inflammation and
wound healing?
The circulatory system cannot adequately perfuse tissues.
The underlying chronic illness exists.
The complement is deficient.
The number of mast cells is insufficient. - ANS ✓The underlying chronic illness exists.
A generalized inflammatory response seen in chronic illness depletes the body's
reserves to fight against illness.
Which cells are the body's primary defense against parasite invasion?
B lymphocytes
Eosinophils
Neutrophils
T lymphocytes - ANS ✓Eosinophils are the body's primary defense against parasites.
What Phagocytes bacteria?
Eosinophils
Macrophages
Perforin - ANS ✓Macrophages work by eating or phagocytosing bacteria.
WGU D115
WGU D115
WGU D115 Unit 2 | Advanced Pathophysiology for the
Advanced Practice Nurse | Qs & As| Grade A| 100% Correct
Latest Update (2025/ 2026)
How can an X-linked recessive disease skip generations?
Mothers cannot pass X-linked genes to their sons.
Females are hemizygous for the X chromosome.
The disease can be transmitted through female carriers.
These diseases need only one copy of the gene in females. - ANS ✓The disease can be
transmitted through female carriers.
Since females have two copies of the X chromosome, the mother may provide an
unaffected X to a daughter or son. Furthermore, a daughter may not show signs of the
disease because she has the other X (the only X the father can give to a female) to cancel
it out.
Which type of risk is referred to as the ratio of the disease rate among the entire
population to the disease rate in an unexposed population?
Relative
Attributable
Contingency
Causal - ANS ✓Relative risk is a ratio of probability, not an actual occurrence of disease.
What are the empirical risks for most multifactorial diseases based on?
Direct observation
Chromosomal testing
WGU D115
, 2
WGU D115
Relative risks
Liability thresholds - ANS ✓Many factors from lifestyle to genetics affect multifactorial
diseases. Observation and evaluation of each case individually provides the most
thorough and accurate assessment.
What refers to the silenced gene of a gene pair.
Imprinted, activated, mutated, altered - ANS ✓The imprinted gene is the silent gene of a
gene pair.
What is the primary reason that some older adults have impaired inflammation and
wound healing?
The circulatory system cannot adequately perfuse tissues.
The underlying chronic illness exists.
The complement is deficient.
The number of mast cells is insufficient. - ANS ✓The underlying chronic illness exists.
A generalized inflammatory response seen in chronic illness depletes the body's
reserves to fight against illness.
Which cells are the body's primary defense against parasite invasion?
B lymphocytes
Eosinophils
Neutrophils
T lymphocytes - ANS ✓Eosinophils are the body's primary defense against parasites.
What Phagocytes bacteria?
Eosinophils
Macrophages
Perforin - ANS ✓Macrophages work by eating or phagocytosing bacteria.
WGU D115
