Nursing Elites

1. Down syndrome is caused by ________

• A. a chemical imbalance.
• B. a gene on the X chromosome.
• C. possessing an extra X chromosome.
• D. possessing an extra chromosome in chromosome 21.

Correct answer: D

Rationale: Down syndrome is caused by possessing an extra chromosome in chromosome 21, not a chemical imbalance (choice A), a gene on the X chromosome (choice B), or possessing an extra X chromosome (choice C). The presence of an extra copy of chromosome 21, also known as trisomy 21, leads to the characteristic features and health problems associated with Down syndrome.

2. 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.

3. How do childhood experiences influence adult psychopathology?

• A. Childhood experiences have no impact on adult psychopathology.
• B. Childhood experiences can have a profound impact on adult psychopathology.
• C. Childhood experiences are unrelated to adult psychopathology.
• D. Childhood experiences have only a minimal impact on adult psychopathology.

Correct answer: B

Rationale: The correct answer is B. Childhood experiences, such as trauma and attachment issues, can indeed have a profound impact on adult psychopathology. These experiences can shape an individual's psychological development, influencing their mental health and well-being throughout their life. Choice A is incorrect as research shows that childhood experiences do play a significant role in adult psychopathology. Choice C is also incorrect as there is evidence supporting the link between childhood experiences and adult psychopathology. Choice D is incorrect because childhood experiences can have more than just a minimal impact on adult psychopathology; they can be quite substantial.

4. What are genes made of?

• A. Trisomes
• B. Chromosomes
• C. DNA
• D. Proteins

Correct answer: C

Rationale: Genes are made of DNA, which is the genetic material that carries the instructions for the development, functioning, growth, and reproduction of organisms. While chromosomes contain genes, they are not what genes themselves are made of. Proteins are involved in gene expression and regulation, but they are not the primary material genes consist of. Trisomes is an incorrect term in this context and does not relate to the composition of genes.

5. Distinguish between necessary, sufficient, and contributory causes of abnormal behavior.

• A. Necessary causes are required for a disorder to develop but do not guarantee it.
• B. Sufficient causes guarantee a disorder will develop, but they are not required.
• C. Contributory causes increase the likelihood of a disorder but are neither necessary nor sufficient.
• D. Contributory causes are conditions that guarantee the occurrence of a disorder.

Correct answer: A

Rationale: In understanding abnormal behavior, it is crucial to differentiate between necessary, sufficient, and contributory causes. Necessary causes are those that are required for a disorder to develop, meaning that without them, the disorder would not occur. However, their presence does not guarantee the occurrence of the disorder. Sufficient causes, on the other hand, are those that alone can guarantee the development of a disorder, but they are not the only factors that can lead to it. Contributory causes are factors that increase the likelihood of a disorder but are not essential on their own nor do they guarantee the disorder. Therefore, choice A is the correct answer as it accurately describes the role of necessary causes in the development of abnormal behavior. Choices B, C, and D are incorrect as they misrepresent the definitions and roles of sufficient and contributory causes in causing abnormal behavior.

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