Nokea
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.
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Which neurotransmitter is reduced in both the manic and depressive phases of bipolar disorder?
- A. Acetylcholine
- B. Dopamine
- C. Norepinephrine
- D. Serotonin
Correct Answer: D
Rationale: The correct answer is D, Serotonin. Serotonin levels are reduced during both the manic and depressive phases of bipolar disorder. Acetylcholine (choice A) is not typically linked to bipolar disorder. Dopamine (choice B) and norepinephrine (choice C) are more commonly associated with conditions like schizophrenia and depression, respectively, rather than bipolar disorder. Therefore, they are not the neurotransmitters reduced in both manic and depressive phases of bipolar disorder.
In order for one to have a recessive trait (e.g., having red hair), the person must receive?
- A. At least one copy of a recessive gene from a parent
- B. Two copies of a recessive gene, one from each parent
- C. At least one copy of a recessive gene and at least one copy of a dominant gene
- D. At least two copies of a recessive gene from one parent
Correct Answer: B
Rationale: Recessive traits are expressed when an individual inherits two copies of the recessive gene, one from each parent. Therefore, the correct answer is B. Choice A is incorrect as one copy of a recessive gene is not sufficient to display a recessive trait. Choice C is incorrect because having at least one copy of a dominant gene is unrelated to expressing a recessive trait. Choice D is incorrect because two copies of a recessive gene must come from both parents, not just one.
Charles has suffered from schizophrenia for many years and now resides in a group treatment facility. One day a nurse approaches him and quietly tells him that his sister, who has been fighting cancer for many months, died that morning. Charles has no appreciable facial reaction and in a very monotone voice says, 'okay.' The nurse is not surprised by Charles's lack of response to the awful news because she knows that _________ is one symptom often seen in those suffering from schizophrenia?
- A. Clang associations
- B. Echolalia
- C. Blunted affect
- D. Perseveration
Correct Answer: C
Rationale: In individuals with schizophrenia, blunted affect, or reduced emotional expression, is a common symptom. In this scenario, Charles's lack of emotional response upon hearing about his sister's death aligns with the characteristic of blunted affect. This symptom can manifest as a limited range of facial expressions, monotone voice, and reduced display of emotions. Choice A, 'Clang associations,' refers to a thought disorder characterized by the use of words that sound alike but are not logically connected. Choice B, 'Echolalia,' is the repetition of words spoken by others. Choice D, 'Perseveration,' is the persistent repetition of a response or behavior even when it is no longer appropriate.
Which school of psychology takes the most positive view of human nature?
- A. Behaviorism.
- B. Functionalism.
- C. Humanism.
- D. Psychoanalysis.
Correct Answer: C
Rationale: The correct answer is C: Humanism. Humanism is a school of psychology that focuses on the positive aspects of human nature, emphasizing personal growth, self-actualization, and the inherent goodness in individuals. Behaviorism (choice A) primarily focuses on observable behaviors and conditioning, functionalism (choice B) emphasizes the functions of consciousness and behavior adaptation, and psychoanalysis (choice D) delves into unconscious thoughts and childhood experiences, rather than having a fundamentally positive view of human nature.
One key issue in the study of human development is the continuity-discontinuity issue. The discontinuity side posits that development is characterized by change in type or kind. These are known as ____.
- A. Qualitative change
- B. Quantitative change
- C. Maturation
- D. Multidirectional development
Correct Answer: A
Rationale: The correct answer is A: Qualitative change. Qualitative change aligns with the discontinuity view by involving changes in type or kind. This contrasts with quantitative change (B), which is about changes in amount or quantity. Maturation (C) refers to the process of becoming fully developed in a particular way, and multidirectional development (D) emphasizes that development involves both gains and losses, not specifically focusing on changes in type or kind.