Nursing Elites

1. How does the author organize the passage?

• A. heading and subheadings
• B. superscripts
• C. diagrams
• D. labels and footnotes

Correct answer: A

Rationale: The author uses heading and subheadings to organize the passage. Each subheading focuses on either dairy (e.g., beverages, meals, snacks, dessert) or non-dairy options for obtaining more calcium from food. This organizational structure makes it easier for readers to identify and understand the different categories of tips provided within the text. Choices B, C, and D are incorrect because superscripts, diagrams, labels, and footnotes are not used as organizational features in the passage; instead, headings and subheadings play a key role in structuring the information.

2. What is the instructor's main purpose in writing this email to his students?

• A. To criticize students for their poor performance on the recent essay exam
• B. To motivate students to persevere despite setbacks
• C. To offer students a chance to improve their scores and avoid failing the course
• D. To acknowledge the difficulty of the essay exam for most students

Correct answer: C

Rationale: The instructor's main purpose in writing the email is to provide students with opportunities to improve their scores and avoid failing the course. The email outlines different options for extra credit projects that can help students make up for the low scores they received on the essay exam. This shows that the instructor is focused on helping students succeed rather than criticizing them (choice A), motivating them (choice B), or acknowledging the difficulty of the exam (choice D).

3. Which hormone regulates the sleep-wake cycle?

• A. Cortisol
• B. Melatonin
• C. Thyroxine
• D. Insulin

Correct answer: B

Rationale: The correct answer is B: Melatonin. Melatonin, produced by the pineal gland, is the hormone that regulates the sleep-wake cycle. It helps signal to the body when it's time to sleep and wake up, playing a crucial role in maintaining a healthy sleep pattern. Choice A, Cortisol, is known as the stress hormone and plays a role in the body's response to stress, not specifically in regulating the sleep-wake cycle. Choice C, Thyroxine, is a hormone produced by the thyroid gland that regulates metabolism, not the sleep-wake cycle. Choice D, Insulin, is a hormone produced by the pancreas that regulates blood sugar levels, not the sleep-wake cycle.

4. Decomposers in an ecosystem play a vital role by:

• A. Photosynthesizing and producing organic matter
• B. Breaking down dead organisms and returning nutrients to the environment
• C. Preying on herbivores and controlling their populations
• D. Fixing nitrogen from the atmosphere and making it available to plants

Correct answer: B

Rationale: Decomposers are organisms that break down dead organic matter, such as dead plants and animals, into simpler substances. By doing so, they help to recycle nutrients back into the environment, making them available for other organisms to use. This process is essential for the functioning of ecosystems, as it ensures that nutrients are not lost but instead are continuously cycled through the ecosystem. Photosynthesis (option A) is the process by which plants and some other organisms convert light energy into chemical energy in the form of glucose, and it is not a role of decomposers. Preying on herbivores (option C) is a role typically carried out by predators, not decomposers. Fixing nitrogen from the atmosphere (option D) is a process carried out by nitrogen-fixing bacteria, not decomposers.

5. Jacob has $100. She spends 87% of the money. She then invests the remaining amount and earns a profit of 75%. How much money does she now have?

• A. $13.00
• B. $87.00
• C. $22.75
• D. $9.75

Correct answer: C

Rationale: Jacob spends 87% of $100, which is $87, leaving her with $13. When she invests the remaining $13 and earns a 75% profit, she gains an additional $9.75. Thus, the total amount she now has is $13 (remaining amount) + $9.75 (profit) = $22.75. Choice A is incorrect as it reflects the remaining amount before investing and earning a profit. Choice B is incorrect as it does not account for the profit earned from the investment. Choice D is incorrect as it only considers the profit amount, not the total sum.

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