Nursing Elites

1. Which of the following sentences correctly uses apostrophes?

• A. Our home's roof needs repairing.
• B. My grandparents' families are coming to town for the holidays.
• C. There are many parks located across the country.
• D. All of the women's things were lost at sea.

Correct answer: A

Rationale: Choice A, 'Our home's roof needs repairing,' is the correct answer as it correctly uses the apostrophe to indicate possession. In this sentence, the apostrophe is used to show that the roof belongs to the home. Choice B is incorrect because it should be 'My grandparents' families' to show that multiple families belong to the grandparents. Choice C is incorrect as the sentence should be 'There are many parks located across the country' without using an apostrophe. Choice D is incorrect because it should be 'All of the women's things' to indicate possession by the women.

2. During swallowing, what is the role of the epiglottis, a small flap of cartilage located near the base of the tongue?

• A. Initiates the swallowing reflex
• B. Grinds food into smaller pieces
• C. Covers the trachea to prevent food aspiration
• D. Stores saliva for lubrication

Correct answer: C

Rationale: The epiglottis plays a crucial role during swallowing by covering the trachea to prevent food or liquid from entering the airway, which could lead to aspiration. By acting as a lid over the trachea, it ensures that food passes down the esophagus to the stomach, preventing it from entering the lungs. Choice A is incorrect as the swallowing reflex is a coordinated muscular action involving the tongue and throat muscles. Choice B is incorrect as grinding food into smaller pieces is primarily the function of the teeth and the initial stages of digestion. Choice D is incorrect as the storage of saliva for lubrication is not a function of the epiglottis, but rather involves salivary glands.

3. Which of the following is a primary source?

• A. A critic's summary of a book on Abraham Lincoln.
• B. A peer-reviewed scientific journal's table of contents.
• C. A gene splicing study report with data.
• D. A news article quoting research into curing cancer.

Correct answer: C

Rationale: The correct answer is C. A gene splicing study report with data is a primary source because it provides original research findings. In contrast, choice A is a secondary source as it involves a critic's interpretation of a book. Choice B, the table of contents of a peer-reviewed scientific journal, is not a primary source but a tertiary source, providing a summary of articles. Choice D, a news article quoting research, is a secondary source that presents information based on primary sources rather than the original research itself.

4. Immunoglobulin G (IgG) is the most abundant antibody type, responsible for:

• A. Immediate allergic reactions
• B. Neutralizing toxins and viruses
• C. Activating other immune cells
• D. Protecting newborns from infections

Correct answer: B

Rationale: Immunoglobulin G (IgG) is indeed the most prevalent antibody type in the blood and tissue fluids. Its primary functions include neutralizing toxins and viruses, promoting phagocytosis, and activating the complement system. IgG plays a crucial role in long-term immunity and provides passive immunity to newborns by crossing the placenta, safeguarding them from infections. Immediate allergic reactions are mainly mediated by IgE, not IgG. While IgM is known for activating other immune cells, IgG focuses on other key functions within the immune response, such as neutralizing pathogens and enhancing phagocytosis. Therefore, the correct answer is B, as IgG is primarily involved in neutralizing toxins and viruses, rather than the other options presented.

5. During nuclear transmutation, a target nucleus is bombarded with a particle to create:

• A. A heavier isotope of the same element
• B. A lighter isotope of the same element
• C. An entirely new element
• D. A chain reaction of nuclear fission

Correct answer: C

Rationale: During nuclear transmutation, a target nucleus is bombarded with a particle to create an entirely new element. This process involves changing the number of protons in the nucleus, resulting in the creation of a different element. Options A and B are incorrect because nuclear transmutation leads to the formation of a new element, not a heavier or lighter isotope of the same element. Option D, a chain reaction of nuclear fission, is incorrect as nuclear transmutation involves the direct conversion of one element into another through bombardment with particles, not the initiation of a fission chain reaction.

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