Nursing Elites

1. What is the result when a single zygote separates into two parts, each developing into a separate individual?

• A. Dizygotic twin
• B. Monozygotic twin
• C. Fraternal twin
• D. Nonidentical twin

Correct answer: B

Rationale: The correct answer is B, Monozygotic twin. A monozygotic twin, also known as an identical twin, is the result when a single zygote splits into two parts, leading to the development of two genetically identical individuals. Choices A, C, and D are incorrect because they do not accurately describe the scenario where a single zygote splits into two parts to form identical twins. Dizygotic twin (Choice A) refers to fraternal twins, which result from two separate eggs fertilized by two different sperm cells. Fraternal twin (Choice C) is another term for dizygotic twins, arising from two separate zygotes. Nonidentical twin (Choice D) is a synonymous term for dizygotic or fraternal twins, indicating that they are not genetically identical.

2. Which of the following is an appropriate description of a child with conduct disorder?

• A. They may argue repeatedly with adults, ignore adult rules and requests, deliberately annoy other people, and feel much anger and resentment
• B. They have great difficulty attending to tasks, or behave overactively and impulsively, or both
• C. Marked by extreme unresponsiveness to other people, severe communication deficits, and highly rigid and repetitive behaviors, interests, and activities
• D. They are often aggressive, deliberately destroy other people's property, steal or lie, skip school, or run away from home

Correct answer: A

Rationale: The correct answer is A. Children with conduct disorder often exhibit behaviors such as arguing with adults, ignoring rules, deliberately annoying others, and displaying anger and resentment. Choice B describes symptoms more characteristic of ADHD (Attention-Deficit/Hyperactivity Disorder). Choice C describes symptoms commonly seen in individuals with autism spectrum disorders. Choice D outlines behaviors associated with oppositional defiant disorder rather than conduct disorder.

3. What is the term for the age of an unborn baby, usually dated from the first day of an expectant mother's last menstrual cycle?

• A. Mental age
• B. Chronological age
• C. Functional age
• D. Gestational age

Correct answer: D

Rationale: The correct answer is D, Gestational age. Gestational age is calculated from the first day of the expectant mother's last menstrual cycle, providing an estimate of how far along the pregnancy is. Mental age (choice A), refers to an individual's level of cognitive functioning in relation to others of the same age group. Chronological age (choice B) is a person's actual age in years. Functional age (choice C) refers to how well a person is able to perform various activities compared to their chronological age.

4. Who is credited with establishing psychology as a distinct scientific field, separate from other disciplines?

• A. G. Stanley Hall
• B. René Descartes
• C. William James
• D. Wilhelm Wundt

Correct answer: D

Rationale: Wilhelm Wundt is the correct answer as he is credited with establishing psychology as a distinct scientific field. Wundt founded the first laboratory dedicated to experimental psychology in 1879, which marked the beginning of psychology as a separate discipline. While the other individuals mentioned in the choices have made significant contributions to the field of psychology, Wilhelm Wundt is specifically known for his pioneering work in establishing psychology as a unique and independent discipline.

5. Which of the following is not a common method for studying genetic influences?

• A. The study of specific gene defects
• B. Twin studies
• C. Adoption studies
• D. Family history (pedigree) studies

Correct answer: A

Rationale: The correct answer is A. Studying specific gene defects is not a common method for investigating genetic influences. Choices B, C, and D are common methods used in genetic research. Twin studies help determine the heritability of traits, adoption studies compare similarities between adopted individuals and their adoptive families versus biological families, and family history studies track the inheritance patterns of traits within families.

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