Nursing Elites

1. What is the role of transfer RNA (tRNA) in protein synthesis?

• A. Transcribes DNA into mRNA
• B. Decodes the genetic code on mRNA
• C. Carries specific amino acids to the ribosomes
• D. Modifies the structure of proteins

Correct answer: C

Rationale: A) Transcribes DNA into mRNA: This is the function of RNA polymerase, not transfer RNA (tRNA). tRNA is involved in protein synthesis, not transcription. B) Decodes the genetic code on mRNA: This is the function of tRNA during translation. tRNA molecules carry specific amino acids and recognize the codons on mRNA, ensuring the correct amino acid is added to the growing polypeptide chain. C) Carries specific amino acids to the ribosomes: This is the primary role of tRNA in protein synthesis. Each tRNA molecule is specific for a particular amino acid and carries it to the ribosome, where it is added to the growing protein chain. D) Modifies the structure of proteins: This is not a function of tRNA. Protein modification can occur after translation is complete and involves other cellular processes and molecules.

2. Are red hair and a height of six feet part of an individual's genotype or phenotype?

• A. Red hair is part of the phenotype; height is part of the genotype.
• B. Red hair is part of the genotype; height is part of the phenotype.
• C. Both characteristics describe his genotype.
• D. Both characteristics describe his phenotype.

Correct answer: D

Rationale: In the context of genetics, genotype refers to an individual's genetic makeup, while phenotype refers to the observable characteristics resulting from the interaction of the genotype with the environment. Red hair and a height of six feet are observable characteristics, making them part of the individual's phenotype. Therefore, both red hair and height are aspects of the individual's phenotype. Choices A and B are incorrect as they incorrectly assign one characteristic to the genotype and the other to the phenotype, which is not accurate. Choice C is incorrect as it states that both characteristics describe the genotype, which is inaccurate as they are observable traits. The correct answer is D, as both red hair and height are observable traits or characteristics, falling under the definition of phenotype in genetics.

3. In the sentence 'The flustered man watched the train as it pulled out of the station,' which of the following is the simple subject?

• A. man
• B. the flustered man
• C. watched
• D. train

Correct answer: A

Rationale: The simple subject is the noun or pronoun that the sentence is about. In this sentence, the subject is 'man' because it is the entity performing the action of watching. 'The flustered man' is a noun phrase but not the simple subject as it includes an article and an adjective. 'Watched' is a verb and 'train' is the object of the action, not the subject. Therefore, 'man' is the correct simple subject in this sentence.

4. Which of the following substitutions best captures the meaning of the word 'egregious' in the sentence: 'The errors were becoming so frequent and egregious that the company had no choice but to force the humbled administrator into early retirement'?

• A. thoughtless
• B. bizarre
• C. minor
• D. flagrant

Correct answer: A

Rationale: 'Egregious' means outstandingly bad or shocking. Among the given choices, 'thoughtless' is the best substitution that captures a similar meaning. This is because 'thoughtless' implies actions or errors committed without careful consideration, which aligns with the negative connotation of the word 'egregious' in the sentence. 'Bizarre' (choice B) means strange or unusual, not necessarily bad. 'Minor' (choice C) means of lesser importance or seriousness, which contrasts with the strong negativity of 'egregious.' 'Flagrant' (choice D) means obviously offensive or bad, but it does not fully capture the sense of shock and outstandingly bad conveyed by 'egregious.'

5. Which of the following best explains the meaning of fastidious as it is used in the sentence? "Henry was fastidious about keeping his workspace organized, ensuring that every item was always in its proper place."

• A. fussy
• B. lazy
• C. old-fashioned
• D. hilarious

Correct answer: A

Rationale: In this context, the word 'fastidious' describes someone who pays great attention to detail, is very meticulous, and particular about things being perfect. Henry's behavior of keeping his workspace organized and ensuring everything is in its proper place indicates his meticulous nature. 'Fussy' aligns best with this meaning as it conveys being hard to please and excessively attentive to detail, which accurately describes Henry's behavior. Choices B, C, and D are incorrect as they do not capture the essence of being meticulous and attentive to detail, which is the central meaning conveyed by 'fastidious' in this context.

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