during conception the 23 unpaired chromosomes in the ovum and sperm combine to form 23 pairs in an entirely new cell called the

ATI RN

Exam 4 Psychology

1. During conception, the 23 unpaired chromosomes in the ovum and sperm combine to form 23 pairs in an entirely new cell called the?

A. Embryo
B. DNA
C. Fetus
D. Zygote

Correct answer: D

Rationale: The correct answer is D, Zygote. A zygote is formed when the 23 chromosomes from the ovum and sperm combine during conception. It is the initial cell formed and marks the beginning of a new organism. Choice A, Embryo, is incorrect as an embryo is formed later in the development process. Choice B, DNA, is incorrect as DNA is the genetic material within the chromosomes but is not the name of the new cell formed after fertilization. Choice C, Fetus, is incorrect as a fetus is the stage of prenatal development that occurs well after the zygote stage.

2. When examining heredity, mental disorders are almost always ________.

A. influenced by one particular gene.
B. influenced by multiple genes.
C. influenced by recessive genes.
D. not influenced by genes.

Correct answer: B

Rationale: When examining heredity and mental disorders, it is important to note that these conditions are influenced by multiple genes working together. Mental disorders are complex traits that arise from the interplay of various genetic and environmental factors. Therefore, choice B, 'influenced by multiple genes,' is the correct answer. Choice A, 'influenced by one particular gene,' is incorrect because mental disorders typically do not result from the action of a single gene. Choice C, 'influenced by recessive genes,' is incorrect as it oversimplifies the genetic basis of mental disorders. Choice D, 'not influenced by genes,' is also incorrect as genes play a significant role in the development of mental disorders.

3. What neurotransmitter was first believed to be the cause of schizophrenia?

A. GABA
B. Serotonin
C. Epinephrine
D. Dopamine

Correct answer: D

Rationale: The correct answer is Dopamine. Dopamine was initially thought to be the primary cause of schizophrenia. This neurotransmitter hypothesis was based on the observation that drugs that increase dopamine activity can worsen symptoms of schizophrenia, while drugs that decrease dopamine activity can improve symptoms. Choices A, B, and C are incorrect because GABA, serotonin, and epinephrine were not the neurotransmitters initially believed to be the cause of schizophrenia.

4. Distinguish between assimilation and accommodation.

A. Assimilation refers to adjusting our mental frameworks to incorporate new information.
B. Assimilation is when new experiences are interpreted in terms of existing schemas.
C. Assimilation is adapting our behaviors to match societal norms.
D. Assimilation and accommodation are unrelated to cognitive development.

Correct answer: B

Rationale: The correct answer is B. Assimilation is when new experiences are interpreted in terms of existing schemas, meaning individuals try to fit new information into their pre-existing understanding of the world. Accommodation, on the other hand, involves adjusting our schemas to fit new information, which means changing our existing mental frameworks when new information doesn't fit. Choice A is incorrect because it describes accommodation rather than assimilation. Choice C is incorrect as it confuses assimilation with social adaptation. Choice D is incorrect as assimilation and accommodation are fundamental processes in cognitive development, as described by Piaget.

5. Children from lower-SES families ________.

A. are more likely to be resilient adults than those from higher-SES families.
B. show no signs of ill effects if there is an increase in SES before age 5.
C. are not affected by SES status unless persistent employment is the reason for the economic hardships of the family.
D. are less likely to show ill effects of SES status if they possess a high IQ and develop healthy attachments to adults and peers.

Correct answer: D

Rationale: Children from lower-SES families are less likely to show ill effects of SES status if they possess a high IQ and develop healthy attachments. Choice A is incorrect because children from lower-SES families typically face more challenges and are not inherently more resilient. Choice B is incorrect as an increase in SES may not erase the effects of early socioeconomic disadvantages. Choice C is incorrect as SES status can impact children from lower-SES families regardless of the reason for economic hardships.