Nokea
What are substances, such as viruses and drugs, that can cause birth defects?
- A. Teratogens
- B. Placenta
- C. Parturition
- D. Androgens
Correct Answer: A
Rationale: Teratogens are substances that can cause birth defects, especially if exposure occurs during critical periods of development. In this context, teratogens refer to external agents that can interfere with the development of the embryo or fetus, leading to structural or functional abnormalities. Choice B, Placenta, is incorrect as it is an organ that develops during pregnancy to provide nutrients and oxygen to the fetus and remove waste products. Choice C, Parturition, refers to the process of giving birth and is not related to substances that cause birth defects. Choice D, Androgens, are male sex hormones and are not associated with causing birth defects.
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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.
In __, the individual can't recall everything about a certain period of time.
- A. Systematized amnesia
- B. Selective amnesia
- C. Collective amnesia
- D. Localized amnesia
Correct Answer: D
Rationale: Localized amnesia refers to the inability to recall all events during a specific period of time. This type of amnesia is characterized by the loss of memories related to a particular incident or period, while other memories remain intact. Choices A, B, and C are incorrect because they refer to different types of amnesia. Systematized amnesia is a term used to describe a selective loss of memory related to a specific category of information or knowledge. Selective amnesia involves the conscious or unconscious blocking out of specific memories, often due to psychological reasons. Collective amnesia pertains to a lack of shared memory or historical awareness within a group or society.
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.
Franklin wakes up in a homeless shelter in another town. He doesn't know where he is or how he got there, and he's confused when people say he has been calling himself Anthony. This is most likely an episode of dissociative?
- A. Amnesia
- B. Dissociative fugue
- C. Wandering
- D. Flight of ideas
Correct Answer: B
Rationale: The correct answer is B, Dissociative fugue. In the scenario described, Franklin experiencing memory loss, travel to another town, assuming a new identity (calling himself Anthony) aligns with dissociative fugue. Amnesia (Choice A) involves memory loss without the additional aspects of travel and assuming a new identity. Wandering (Choice C) is vague and does not encompass the complete set of symptoms described. Flight of ideas (Choice D) is a symptom of conditions like mania, not dissociative disorders.
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.