Nursing Elites

1. Which epithelial tissue type is the outermost layer of your skin an example of?

• A. Simple cuboidal
• B. Stratified squamous
• C. Simple columnar
• D. Stratified columnar

Correct answer: B

Rationale: The outermost layer of the skin, known as the epidermis, is composed of stratified squamous epithelial tissue. This type of tissue is well-suited for protection against mechanical stress and dehydration, making it ideal for the skin's barrier function. Simple cuboidal (Choice A) epithelial tissue is found in areas where secretion and absorption occur, such as kidney tubules. Simple columnar (Choice C) epithelial tissue lines the digestive tract, providing a large surface area for absorption. Stratified columnar (Choice D) epithelial tissue is less common and is found in limited regions like parts of the male urethra and ducts of some glands, but not in the outermost layer of the skin.

2. Which of the following sentences uses correct punctuation for a possessive noun?

• A. The baby's bibs were covered in pureed food.
• B. Sarah's and Claire's business was thriving in its new location.
• C. A multitude of clients' complaints filled the comment box.
• D. A busy worker's best tool is a good plan.

Correct answer: C

Rationale: Choice C, 'A multitude of clients' complaints filled the comment box,' is the correct answer. 'Clients'' is the plural possessive form to indicate that the complaints belong to the clients. In Choice A, 'baby's' is correctly punctuated to show the bibs belong to the baby. Choice B, 'Sarah's and Claire's business was thriving in its new location,' incorrectly uses an apostrophe before 'business,' making it possessive twice. Choice D, 'A busy worker's best tool is a good plan,' correctly shows possession of the best tool by the busy worker.

3. Which of the following sentences has the correct subject-verb agreement?

• A. The Akhal-Teke horse breed, originally from Turkmenistan, has long enjoyed a reputation for bravery and fortitude.
• B. The employer decided that he could not, due to the high cost of health care, afford to offer other benefits to his employees.
• C. Though Puerto Rico is known popularly for its beaches, its landscape also includes mountains, which are home to many of the island’s rural villages.
• D. Each of the storm chasers decides whether or not to go out when rain makes visibility low.

Correct answer: B

Rationale: The subject 'employer' in sentence B agrees with the singular verb 'decided.' In subject-verb agreement, singular subjects need singular verbs, while plural subjects need plural verbs. The use of 'decided' correctly pairs with the singular subject 'employer' in this sentence. Choice A is incorrect as the subject 'Akhal-Teke horse breed' is singular and should be paired with the singular verb 'has,' not 'have.' Choice C is incorrect because the verb 'play' does not agree with the plural subject 'mountains'; it should be 'play host' or 'are home to.' Choice D is incorrect as 'Each of the storm chasers' is a singular subject and should be paired with the singular verb 'decides,' not 'decide.'

4. Who is probably the oldest person in my family?

• A. My Uncle Johan
• B. The oldest person
• C. The oldest person in my family
• D. Family

Correct answer: C

Rationale: The correct answer is 'C: The oldest person in my family.' The complete subject of the sentence is 'The oldest person in my family,' which includes all the words that describe who or what the sentence is about. Choices A, B, and D are incorrect because they do not form a complete subject that accurately represents who the sentence is referring to in the context of the family relationship.

5. Which of the following is directly transcribed from DNA and represents the first step in protein synthesis?

• A. siRNA
• B. rRNA
• C. mRNA
• D. tRNA

Correct answer: C

Rationale: mRNA (messenger RNA) is directly transcribed from DNA in the nucleus during the process of transcription. It serves as a template for protein synthesis during translation in the cytoplasm. mRNA carries genetic information from the DNA to the ribosomes, where it determines the sequence of amino acids in a protein. Thus, mRNA represents the first step in protein synthesis as it carries the code from the DNA to be translated into a protein. Choice A, siRNA (small interfering RNA), is involved in post-transcriptional gene silencing and does not play a role in protein synthesis. Choice B, rRNA (ribosomal RNA), is a component of the ribosome and plays a structural and functional role in protein synthesis but is not directly transcribed from DNA. Choice D, tRNA (transfer RNA), is responsible for bringing amino acids to the ribosome during protein synthesis but is not directly transcribed from DNA.

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