normal human cells have

ATI RN

Psychology 2301 Exam 1

1. Normal human cells have ________

A. twenty-two chromosome pairs and one pair of sex chromosomes.
B. twenty-one trisomy chromosome pairs, one autosomal pair, and one pair of sex chromosomes.
C. twenty-one chromosome pairs and two trisomy chromosome pairs.
D. twenty-three chromosome pairs.

Correct answer: A

Rationale: Normal human cells have twenty-two chromosome pairs and one pair of sex chromosomes. This is the correct answer as it accurately describes the typical chromosome count in human cells. Choice B is incorrect because it mentions 'twenty-one trisomy chromosome pairs,' which is not characteristic of normal cells. Choice C is incorrect as it suggests having 'two trisomy chromosome pairs,' which is abnormal. Choice D is incorrect as it states 'twenty-three chromosome pairs,' which is not the standard count in normal human cells.

2. How do socioeconomic factors affect mental health?

A. Socioeconomic factors do not affect mental health.
B. Socioeconomic factors are one of the primary determinants of mental health.
C. Socioeconomic factors only affect mental health in extreme cases.
D. Socioeconomic factors have no clear impact on mental health.

Correct answer: B

Rationale: The correct answer is B. Socioeconomic factors like income and education levels are key determinants of mental health. They influence access to resources such as healthcare, housing, and social support systems, which can impact an individual's mental well-being. Additionally, socioeconomic factors can contribute to stress levels and overall quality of life, which in turn affect mental health. Choice A is incorrect because socioeconomic factors do play a significant role in mental health outcomes. Choice C is incorrect as socioeconomic factors have a broad impact on mental health beyond extreme cases. Choice D is also incorrect as numerous studies have shown the clear impact of socioeconomic factors on mental health.

3. Alicia, 5 years old, knows that she will take a bath at 6:05, change clothes at 6:15, eat breakfast at 6:20, commute to school at 6:40, and join the assembly at 7:00. A child's awareness of his or her scripts or daily routine is classified under which type of memory?

A. Semantic memory
B. Nondeclarative memory
C. Generic memory
D. Autobiographical memory

Correct answer: D

Rationale: The correct answer is D, Autobiographical memory. Autobiographical memory refers to the memory of a person's life events, such as daily routines and personal experiences. In this scenario, Alicia's awareness of her daily routine falls under autobiographical memory as she remembers specific events related to her own life. Choices A, B, and C are incorrect. Semantic memory is related to general knowledge about the world, nondeclarative memory involves memories that are not consciously recalled, and generic memory is not a recognized memory classification.

4. Which of the following statements is true?

A. Most behavioral disorders are determined exclusively by genes.
B. Genes play a role in most mental disorders.
C. Genes do not affect biochemical processes.
D. The genes that will be expressed in an individual are not affected by experience.

Correct answer: B

Rationale: The correct answer is B: 'Genes play a role in most mental disorders.' This statement is true as genes do play a significant role in the development of various mental disorders. Choice A is incorrect because most behavioral disorders are influenced by a combination of genetic, environmental, and other factors, not exclusively genes. Choice C is incorrect as genes do affect biochemical processes. Choice D is incorrect because the expression of genes in an individual can be influenced by experiences and environmental factors, a concept known as gene-environment interaction.

5. What does incidence refer to?

A. How many new cases of a disorder occur during a given period of time
B. How many people have recovered from a disorder in a given period of time
C. The percentage of males and females who have a disorder
D. How many people in the population as a whole have a disorder

Correct answer: A

Rationale: The correct answer is A: 'How many new cases of a disorder occur during a given period of time.' Incidence specifically measures the rate of occurrence of new cases of a particular condition within a defined population and time frame. This distinguishes it from prevalence, which includes both new and existing cases. Choices B, C, and D are incorrect because they do not accurately define the term 'incidence.' Choice B refers to recovery, choice C mentions gender distribution, and choice D relates to the total population affected by a disorder, which are not reflective of the concept of incidence.