WGU D115 (ADVANCED
PATHOPHYSIOLOGY) COMPLETE TEST
BANK & VERIFIED SOLUTIONS
330+ (Updated 2026) Complete Exam Pack | A+ Graded Questions &
Verified Answers
100% Guarantee Pass
📋 DOCUMENT OVERVIEW 339 Qs
This document covers advanced pathophysiology topics including genetic diseases, chromosomal
abnormalities, prenatal diagnostic studies, and various types of cancer (leukemia and lymphoma). It
provides 339 questions with correct answers and detailed explanations, offering a comprehensive review
of the subject matter. Students can use this resource to study, review, and understand complex
pathophysiology concepts, ultimately aiding in exam preparation and knowledge retention.
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
Which type of genetic disease affects males more frequently than females?
CORRECT ANSWER
Sex-Linked recessive. Since males only have one X and one Y, if the affected chromosome has the illness,
it will be expressed.
RATIONALE: Male mammals, including humans, have one X and one Y chromosome, resulting in an increased likelihood
of expressing sex-linked recessive traits, as they only need to inherit one affected X chromosome to express the
condition. This is in contrast to females, who have two X chromosomes, so they would need to inherit two affected X
chromosomes to express the condition, making sex-linked recessive diseases less likely to be expressed in females.
QUESTION 2
In which two conditions are chromosomal abnormalities the leading known cause?
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, CORRECT ANSWER
Intellectual disability and fetal miscarriage. Chromosome abnormalities are the leading known cause of
intellectual disability and fetal miscarriage.
RATIONALE: Chromosomal abnormalities can disrupt the delicate balance of genetic information necessary for normal
fetal development, leading to conditions such as intellectual disability. Similarly, chromosomal abnormalities can cause
the fetus to miscarry due to severe developmental disruptions, making intellectual disability and fetal miscarriage closely
related conditions influenced by chromosomal abnormalities.
QUESTION 3
What are three examples of prenatal diagnostic studies?
CORRECT ANSWER
Chorionic villus sampling (CVS), amniocentesis, and preimplantation genetic testing (PGT) are examples
of prenatal diagnostic studies and are performed in vitro. CVS is a form of genetic testing that provides
genetic information found in utero and is usually performed between weeks 11 and 14 of pregnancy. An
amniocentesis is a form of genetic testing that evaluates amniotic fluid and is usually performed during
the second trimester, between weeks 15 and 20 of pregnancy. PGT is performed on the embryo prior to
implantation.
RATIONALE: The answer is correct because these three tests are all performed outside the body, in vitro, to analyze
genetic material for potential genetic disorders, which is a key characteristic of prenatal diagnostic studies. The fact that
they provide genetic information found in utero, evaluate amniotic fluid, or are performed on an embryo before
implantation further supports their classification as prenatal diagnostic studies.
QUESTION 4
Which genetic disorder is characterized by the presence of a zygote having one chromosome with a
normal complement of genes and one chromosome with a missing gene?
CORRECT ANSWER
Cri du chat syndrome (translated as "cry of the cat") is caused by a DNA deletion. This term describes the
cry often heard from a baby affected by the syndrome. Cri du chat syndrome can present as a
microcephalic, low birth-weight baby with a piercing cry.
RATIONALE: Cri du chat syndrome is caused by a DNA deletion because it results from a partial deletion of
chromosome 5, which carries a normal complement of genes, but with one missing gene. This deletion leads to a
characteristic microcephalic, low birth-weight baby with a piercing cry, making it the genetic disorder that matches the
description of having one chromosome with a normal complement of genes and one chromosome with a missing gene.
QUESTION 5
How can an X-linked recessive disease skip generations?
CORRECT ANSWER
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.
Trusted by thousands of students and professionals worldwide Page 2 of 101
, RATIONALE: The explanation is correct because it highlights the unique way X-linked recessive diseases can be passed
down through females who are typically not affected due to the presence of two X chromosomes, allowing them to
inherit an unaffected X from their mother and an affected X from their father. This phenomenon, where a female can be
a carrier and not display symptoms, is a key factor in how X-linked recessive diseases can seemingly skip generations.
QUESTION 6
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?
CORRECT ANSWER
Relative risk is a ratio of probability, not an actual occurrence of disease.
RATIONALE: Relative risk is a ratio of probability, not an actual occurrence of disease, because it compares the
probability of disease occurrence in an exposed group to that in an unexposed group, focusing on the relative likelihood
rather than the absolute number of cases. This distinction is crucial because relative risk values can be misleading if
taken as absolute measures of disease frequency, highlighting the importance of interpreting them as ratios of
probabilities.
QUESTION 7
What are the empirical risks for most multifactorial diseases based on?
CORRECT ANSWER
Many factors from lifestyle to genetics affect multifactorial diseases. Observation and evaluation of each
case individually provides the most thorough and accurate assessment.
RATIONALE: This statement is correct because multifactorial diseases result from a combination of genetic and
environmental factors, making each case unique and influenced by various individual factors. By observing and
evaluating each case individually, healthcare professionals can account for these unique combinations of factors,
providing a more accurate assessment of the disease's empirical risks.
QUESTION 8
What refers to the silenced gene of a gene pair.
CORRECT ANSWER
The imprinted gene is the silent gene of a gene pair.
RATIONALE: The imprinted gene is the silenced gene of a gene pair because it is epigenetically modified to be either
maternally or paternally expressed, meaning it is silenced in one parental lineage. This silencing is a result of epigenetic
marks, such as DNA methylation, that are inherited from one parent, allowing the other gene in the pair to be
expressed.
QUESTION 9
What is the primary reason that some older adults have impaired inflammation and wound healing?
CORRECT ANSWER
Trusted by thousands of students and professionals worldwide Page 3 of 101
, The underlying chronic illness exists.
A generalized inflammatory response seen in chronic illness depletes the body's reserves to fight against
illness.
RATIONALE: As we age, our bodies' ability to regulate inflammation can become impaired, leading to an exaggerated or
uncontrolled inflammatory response that exacerbates chronic illness. This chronic illness-induced inflammation depletes
the body's resources, ultimately compromising its ability to effectively heal wounds and manage inflammation,
specifically in older adults.
QUESTION 10
Which cells are the body's primary defense against parasite invasion?
CORRECT ANSWER
Eosinophils are the body's primary defense against parasites.
RATIONALE: Eosinophils play a crucial role in defending the body against parasites through the release of granules that
contain proteins that help eliminate and kill parasites. When a parasite invades the body, eosinophils are recruited to the
site of infection, where they work in conjunction with other immune cells to neutralize the parasite and prevent further
invasion.
QUESTION 11
What Phagocytes bacteria?
CORRECT ANSWER
Macrophages work by eating or phagocytosing bacteria.
RATIONALE: Macrophages are a type of white blood cell that play a crucial role in the immune system by engulfing and
digesting foreign particles, including bacteria. The term "phagocytes" specifically refers to cells that engage in
phagocytosis, and macrophages are the primary cells responsible for this function in relation to bacteria.
QUESTION 12
What is the first response to a foreign pathogen?
CORRECT ANSWER
Helper T cells
RATIONALE: Helper T cells are the first line of response to a foreign pathogen because they recognize antigens
presented by dendritic cells and activate an immune response, triggering the production of cytokines that recruit other
immune cells to the site of infection. This activation process is crucial in initiating the adaptive immune response, which
is essential for combating specific pathogens and establishing long-term immunity.
QUESTION 13
Which characteristic is the most important determinant of immunogenicity when considering the
antigen?
CORRECT ANSWER
Trusted by thousands of students and professionals worldwide Page 4 of 101
PATHOPHYSIOLOGY) COMPLETE TEST
BANK & VERIFIED SOLUTIONS
330+ (Updated 2026) Complete Exam Pack | A+ Graded Questions &
Verified Answers
100% Guarantee Pass
📋 DOCUMENT OVERVIEW 339 Qs
This document covers advanced pathophysiology topics including genetic diseases, chromosomal
abnormalities, prenatal diagnostic studies, and various types of cancer (leukemia and lymphoma). It
provides 339 questions with correct answers and detailed explanations, offering a comprehensive review
of the subject matter. Students can use this resource to study, review, and understand complex
pathophysiology concepts, ultimately aiding in exam preparation and knowledge retention.
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
Which type of genetic disease affects males more frequently than females?
CORRECT ANSWER
Sex-Linked recessive. Since males only have one X and one Y, if the affected chromosome has the illness,
it will be expressed.
RATIONALE: Male mammals, including humans, have one X and one Y chromosome, resulting in an increased likelihood
of expressing sex-linked recessive traits, as they only need to inherit one affected X chromosome to express the
condition. This is in contrast to females, who have two X chromosomes, so they would need to inherit two affected X
chromosomes to express the condition, making sex-linked recessive diseases less likely to be expressed in females.
QUESTION 2
In which two conditions are chromosomal abnormalities the leading known cause?
Trusted by thousands of students and professionals worldwide Page 1 of 101
, CORRECT ANSWER
Intellectual disability and fetal miscarriage. Chromosome abnormalities are the leading known cause of
intellectual disability and fetal miscarriage.
RATIONALE: Chromosomal abnormalities can disrupt the delicate balance of genetic information necessary for normal
fetal development, leading to conditions such as intellectual disability. Similarly, chromosomal abnormalities can cause
the fetus to miscarry due to severe developmental disruptions, making intellectual disability and fetal miscarriage closely
related conditions influenced by chromosomal abnormalities.
QUESTION 3
What are three examples of prenatal diagnostic studies?
CORRECT ANSWER
Chorionic villus sampling (CVS), amniocentesis, and preimplantation genetic testing (PGT) are examples
of prenatal diagnostic studies and are performed in vitro. CVS is a form of genetic testing that provides
genetic information found in utero and is usually performed between weeks 11 and 14 of pregnancy. An
amniocentesis is a form of genetic testing that evaluates amniotic fluid and is usually performed during
the second trimester, between weeks 15 and 20 of pregnancy. PGT is performed on the embryo prior to
implantation.
RATIONALE: The answer is correct because these three tests are all performed outside the body, in vitro, to analyze
genetic material for potential genetic disorders, which is a key characteristic of prenatal diagnostic studies. The fact that
they provide genetic information found in utero, evaluate amniotic fluid, or are performed on an embryo before
implantation further supports their classification as prenatal diagnostic studies.
QUESTION 4
Which genetic disorder is characterized by the presence of a zygote having one chromosome with a
normal complement of genes and one chromosome with a missing gene?
CORRECT ANSWER
Cri du chat syndrome (translated as "cry of the cat") is caused by a DNA deletion. This term describes the
cry often heard from a baby affected by the syndrome. Cri du chat syndrome can present as a
microcephalic, low birth-weight baby with a piercing cry.
RATIONALE: Cri du chat syndrome is caused by a DNA deletion because it results from a partial deletion of
chromosome 5, which carries a normal complement of genes, but with one missing gene. This deletion leads to a
characteristic microcephalic, low birth-weight baby with a piercing cry, making it the genetic disorder that matches the
description of having one chromosome with a normal complement of genes and one chromosome with a missing gene.
QUESTION 5
How can an X-linked recessive disease skip generations?
CORRECT ANSWER
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.
Trusted by thousands of students and professionals worldwide Page 2 of 101
, RATIONALE: The explanation is correct because it highlights the unique way X-linked recessive diseases can be passed
down through females who are typically not affected due to the presence of two X chromosomes, allowing them to
inherit an unaffected X from their mother and an affected X from their father. This phenomenon, where a female can be
a carrier and not display symptoms, is a key factor in how X-linked recessive diseases can seemingly skip generations.
QUESTION 6
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?
CORRECT ANSWER
Relative risk is a ratio of probability, not an actual occurrence of disease.
RATIONALE: Relative risk is a ratio of probability, not an actual occurrence of disease, because it compares the
probability of disease occurrence in an exposed group to that in an unexposed group, focusing on the relative likelihood
rather than the absolute number of cases. This distinction is crucial because relative risk values can be misleading if
taken as absolute measures of disease frequency, highlighting the importance of interpreting them as ratios of
probabilities.
QUESTION 7
What are the empirical risks for most multifactorial diseases based on?
CORRECT ANSWER
Many factors from lifestyle to genetics affect multifactorial diseases. Observation and evaluation of each
case individually provides the most thorough and accurate assessment.
RATIONALE: This statement is correct because multifactorial diseases result from a combination of genetic and
environmental factors, making each case unique and influenced by various individual factors. By observing and
evaluating each case individually, healthcare professionals can account for these unique combinations of factors,
providing a more accurate assessment of the disease's empirical risks.
QUESTION 8
What refers to the silenced gene of a gene pair.
CORRECT ANSWER
The imprinted gene is the silent gene of a gene pair.
RATIONALE: The imprinted gene is the silenced gene of a gene pair because it is epigenetically modified to be either
maternally or paternally expressed, meaning it is silenced in one parental lineage. This silencing is a result of epigenetic
marks, such as DNA methylation, that are inherited from one parent, allowing the other gene in the pair to be
expressed.
QUESTION 9
What is the primary reason that some older adults have impaired inflammation and wound healing?
CORRECT ANSWER
Trusted by thousands of students and professionals worldwide Page 3 of 101
, The underlying chronic illness exists.
A generalized inflammatory response seen in chronic illness depletes the body's reserves to fight against
illness.
RATIONALE: As we age, our bodies' ability to regulate inflammation can become impaired, leading to an exaggerated or
uncontrolled inflammatory response that exacerbates chronic illness. This chronic illness-induced inflammation depletes
the body's resources, ultimately compromising its ability to effectively heal wounds and manage inflammation,
specifically in older adults.
QUESTION 10
Which cells are the body's primary defense against parasite invasion?
CORRECT ANSWER
Eosinophils are the body's primary defense against parasites.
RATIONALE: Eosinophils play a crucial role in defending the body against parasites through the release of granules that
contain proteins that help eliminate and kill parasites. When a parasite invades the body, eosinophils are recruited to the
site of infection, where they work in conjunction with other immune cells to neutralize the parasite and prevent further
invasion.
QUESTION 11
What Phagocytes bacteria?
CORRECT ANSWER
Macrophages work by eating or phagocytosing bacteria.
RATIONALE: Macrophages are a type of white blood cell that play a crucial role in the immune system by engulfing and
digesting foreign particles, including bacteria. The term "phagocytes" specifically refers to cells that engage in
phagocytosis, and macrophages are the primary cells responsible for this function in relation to bacteria.
QUESTION 12
What is the first response to a foreign pathogen?
CORRECT ANSWER
Helper T cells
RATIONALE: Helper T cells are the first line of response to a foreign pathogen because they recognize antigens
presented by dendritic cells and activate an immune response, triggering the production of cytokines that recruit other
immune cells to the site of infection. This activation process is crucial in initiating the adaptive immune response, which
is essential for combating specific pathogens and establishing long-term immunity.
QUESTION 13
Which characteristic is the most important determinant of immunogenicity when considering the
antigen?
CORRECT ANSWER
Trusted by thousands of students and professionals worldwide Page 4 of 101
