Nursing Elites

1. By the twelfth week of pregnancy, __________.

• A. the sex of the fetus can be detected with ultrasound
• B. the mother can feel the movements of the fetus
• C. the fetus is viable and can survive if born early
• D. synchrony between fetal heart rate and motor activity peaks Answer: A Page Ref: 79 Skill Level: Understand Copyright © 2018 Laura E. Berk. All Rights Reserved. 6 Test Bank for Berk, Development Through the Lifespan, 7e Topic: Prenatal Development Difficulty Level: Moderate

Correct answer: A

Rationale: By the twelfth week of pregnancy, the sex of the fetus can be detected with ultrasound. Ultrasound technology allows for visualization of the developing fetus and identification of physical characteristics, such as sex, during prenatal appointments.

2. The concept of ________ means that because of their genetic makeup, individuals differ in their responsiveness to qualities of the environment.

• A. gene-environment interaction
• B. niche-picking
• C. passive correlation
• D. evocative correlation

Correct answer: A

Rationale: The correct answer is A, gene-environment interaction. This concept highlights that genetic factors play a role in how individuals react to environmental factors. Niche-picking (choice B) refers to the tendency of individuals to select environments that complement their genetic predispositions, not the inherent genetic differences in responsiveness. Passive correlation (choice C) involves the association between the genetic makeup of parents and the environment they provide for their children, not individual differences in responsiveness. Evocative correlation (choice D) relates to the idea that an individual's genetic traits can elicit certain responses from others in the environment, rather than individual differences in responsiveness.

3. The force of blood flowing through the __________ keeps it firm.

• A. amnion
• B. umbilical cord
• C. yolk sac
• D. embryonic disk

Correct answer: B

Rationale: The force of blood flowing through the umbilical cord keeps it firm. The umbilical cord is the connection between the placenta and the fetus, providing essential nutrients and oxygen to the developing baby. Blood flow through the umbilical cord helps maintain its structure and function throughout the prenatal period. Choices A, C, and D are incorrect as they do not play a role in providing nutrients and oxygen to the developing baby or in maintaining its firmness.

4. To avoid exposure to toxoplasmosis, Kaye should ask other family members to __________.

• A. stop smoking
• B. pick up after the dog
• C. change the litter box
• D. feed the fish

Correct answer: C

Rationale: To avoid exposure to toxoplasmosis, Kaye should ask other family members to change the litter box. Toxoplasmosis is a parasitic infection that can be transmitted through cat feces, so it is important for pregnant women to avoid handling cat litter to reduce the risk of infection. Choices A, B, and D are incorrect because they are not directly related to preventing toxoplasmosis. Smoking cessation is important for overall health but not specifically to prevent toxoplasmosis. Picking up after the dog and feeding the fish are not relevant to preventing toxoplasmosis, as the infection is primarily associated with cat feces.

5. By using which method of assignment of participants to treatment conditions, investigators increase the chances that participants' characteristics will be equally distributed across treatment groups?

• A. sequential
• B. random
• C. systematic
• D. correlational

Correct answer: B

Rationale: By using random assignment of participants to treatment conditions, investigators increase the chances that participants' characteristics will be equally distributed across treatment groups. Random assignment helps reduce the likelihood of bias in the selection process and ensures that any differences between groups are due to the treatment and not pre-existing group differences. Sequential, systematic, and correlational assignment methods do not provide the same level of assurance in distributing participants' characteristics equally across treatment groups.

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