WGU D115 UNIT 2 questions with verified answers
A healthcare professional is conducting community education on vaccinations.
Which statement about vaccines should the professional include in the
presentation?
Vaccines provide effective protection against most infections.
Most viral vaccines are made by using dead organisms.
Most bacterial vaccines contain attenuated organisms.
Vaccines require booster injections to maintain life-long protection. Ans✓✓✓
Vaccines require booster injections to maintain life-long protection.
Most vaccines require a booster to increase immunity. The initial effects of a
vaccine may diminish over time, and boosters improve protection against disease.
A vaccine is what kind of immunity Ans✓✓✓ Adaptive
Active immunization is produced by Ans✓✓✓ an individual in response to an
antigen or after immunization.
Amniocentesis is recommended for pregnant women with certain health
histories.
Which health history would result in an amniocentesis recommendation?
Those who have experienced in vitro fertilization
Those who had a late menarche
Those who have a history of chronic illness
, Those who have a family history of genetic disorders Ans✓✓✓ Those who have a
family history of genetic disorders
How are erythrocytes destroyed when mismatched blood is administered, causing
an ABO incompatibility?
Phagocytosis by macrophages
Complement-mediated cell lysis
Phagocytosis in the spleen
Natural killer cells Ans✓✓✓ The complement pathway is activated in response to
blood incompatibility.
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.
How do acute and chronic inflammation differ? Ans✓✓✓ Acute- Short duration,
8-10 days from onset to healing.
A healthcare professional is conducting community education on vaccinations.
Which statement about vaccines should the professional include in the
presentation?
Vaccines provide effective protection against most infections.
Most viral vaccines are made by using dead organisms.
Most bacterial vaccines contain attenuated organisms.
Vaccines require booster injections to maintain life-long protection. Ans✓✓✓
Vaccines require booster injections to maintain life-long protection.
Most vaccines require a booster to increase immunity. The initial effects of a
vaccine may diminish over time, and boosters improve protection against disease.
A vaccine is what kind of immunity Ans✓✓✓ Adaptive
Active immunization is produced by Ans✓✓✓ an individual in response to an
antigen or after immunization.
Amniocentesis is recommended for pregnant women with certain health
histories.
Which health history would result in an amniocentesis recommendation?
Those who have experienced in vitro fertilization
Those who had a late menarche
Those who have a history of chronic illness
, Those who have a family history of genetic disorders Ans✓✓✓ Those who have a
family history of genetic disorders
How are erythrocytes destroyed when mismatched blood is administered, causing
an ABO incompatibility?
Phagocytosis by macrophages
Complement-mediated cell lysis
Phagocytosis in the spleen
Natural killer cells Ans✓✓✓ The complement pathway is activated in response to
blood incompatibility.
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.
How do acute and chronic inflammation differ? Ans✓✓✓ Acute- Short duration,
8-10 days from onset to healing.
