what do genes consist of

ATI RN

Psychology 101 Exam 3 Test

1. 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.

2. Which of the following best describes a securely attached child in Japanese culture?

A. A child who is dependent, emotionally restrained, and can express his feelings only in an indirect manner.
B. A child who is independent, emotionally expressive, and can communicate well.
C. A child who is dependent, emotionally labile, and can express his feelings only in an aggressive manner.
D. A child who is independent, emotionally restrained, and can communicate well.

Correct answer: A

Rationale: In Japanese culture, a securely attached child is described as dependent and emotionally restrained. This means that the child relies on their caregiver for support and is able to control their emotions, expressing their feelings in a more subtle and indirect manner. Choice B is incorrect as it describes independence, which is not characteristic of a securely attached child in Japanese culture. Choice C is also incorrect as it describes emotional lability and expressing feelings aggressively, which are not typical of securely attached children. Choice D is incorrect as it combines independence with emotional restraint, which does not align with the characteristics of a securely attached child in Japanese culture.

3. What does the genetic study of identical twins reared apart help to clarify?

A. Differences in brain function
B. Genetic influence on behavior
C. Interaction between genetics and environment
D. The role of environmental factors alone

Correct answer: C

Rationale: The correct answer is C: 'Interaction between genetics and environment.' The genetic study of identical twins reared apart helps in understanding how both genetics and environment play a role in shaping an individual's traits and behaviors. This type of study allows researchers to tease apart the effects of genetic inheritance from those of environmental influences. Choices A, B, and D are incorrect because the study of identical twins reared apart specifically focuses on the interplay between genetics and environment, rather than solely on differences in brain function, genetic influence on behavior, or the role of environmental factors alone.

4. After cheating on her husband and feeling ashamed, Julia accused her husband of cheating. Such behavior is explained by which of the following defense mechanisms?

A. Sublimation
B. Displacement
C. Projection
D. Rationalization

Correct answer: C

Rationale: The correct answer is C, Projection. Projection is the defense mechanism where one attributes their own unacceptable feelings to others. In this scenario, Julia is projecting her feelings of guilt and shame onto her husband by accusing him of cheating. Sublimation (choice A) involves channeling unacceptable impulses into socially acceptable activities. Displacement (choice B) is redirecting emotions from the original source to a substitute target. Rationalization (choice D) is providing logical explanations to justify unacceptable behavior, which is not applicable in this context.

5. How does the concept of neural plasticity relate to recovery from brain injuries?

A. Neural plasticity means the brain cannot recover from injuries.
B. Neural plasticity allows the brain to recover and reorganize after injuries.
C. Neural plasticity refers to the brain's inability to change after injury.
D. Neural plasticity is a myth.

Correct answer: B

Rationale: Neural plasticity allows the brain to recover and reorganize after injuries. It is the brain's ability to adapt and change, forming new connections or reorganizing existing ones to compensate for damage. Choice A is incorrect as neural plasticity enables recovery. Choice C is incorrect as neural plasticity involves the brain's capacity to change. Choice D is incorrect as neural plasticity is a well-established phenomenon in neuroscience.