Nursing Elites

1. What is the formula for calculating molarity?

• A. M = n/V
• B. M = n/L
• C. M = mol/L
• D. M = mol/dm³

Correct answer: A

Rationale: The correct formula for calculating molarity is M = n/V. In this formula, 'M' represents molarity, 'n' represents the number of moles of solute, and 'V' represents the volume of the solution in liters. Molarity is defined as the number of moles of solute per liter of solution, hence the ratio of moles to volume. Choice B, 'M = n/L', is incorrect because 'L' should represent liters instead of the number of moles. Choice C, 'M = mol/L', is incorrect as it does not include the representation of the number of moles 'n'. Choice D, 'M = mol/dm³', is incorrect because 'dm³' is a volume unit equal to a liter, but the correct representation should be in terms of the volume of the solution in liters. Therefore, the correct answer is M = n/V.

2. How does an increase in mass affect the force required to produce the same acceleration on an object?

• A. Increases force required
• B. Decreases force required
• C. Has no effect on force required
• D. Causes unpredictable changes in force required

Correct answer: A

Rationale: The correct answer is A, 'Increases force required.' According to Newton's second law of motion, force is directly proportional to mass and acceleration (F = ma). Therefore, an increase in mass will require an increase in force to produce the same acceleration on an object. Choice B is incorrect because an increase in mass does not decrease the force required; it increases it. Choice C is incorrect as increasing mass does affect the force required. Choice D is incorrect as the relationship between mass and force is predictable according to Newton's laws of motion.

3. What prompted Hedy Lamarr to take up inventing?

• A. Boredom from her film roles lacking spoken lines
• B. Formal training in engineering
• C. Her successful inventions like the radio signal technology
• D. Working with Howard Hughes' aviation team

Correct answer: A

Rationale: Hedy Lamarr took up inventing due to boredom from her film roles lacking spoken lines. The extract mentions that to relieve her boredom, Lamarr turned to inventing after her film roles did not provide much dialogue.

4. Which of the following statements is not true about the relationship between the gastrointestinal system and the endocrine system?

• A. Hormones signal to your body whether you are hungry or full.
• B. Hormones regulate the amount of glucose in your blood.
• C. Hormones stimulate digestive enzymes and peristalsis when you've eaten and need to digest food.
• D. All of the above are true.

Correct answer: D

Rationale: The gastrointestinal system and the endocrine system are closely interconnected. Hormones released by the endocrine system play a crucial role in signaling hunger or fullness, regulating blood glucose levels, and stimulating digestive processes like enzyme secretion and peristalsis for efficient food digestion. Option D, stating 'All of the above are true,' is incorrect in the context of the question because there is a need to identify the statement that is not true about the relationship between the gastrointestinal system and the endocrine system. Choices A, B, and C are all correct statements that reflect the close relationship and interactions between the gastrointestinal and endocrine systems.

5. Which of the statements reflect information that one could reasonably infer based on the author's tone?

• A. The author's tone is persuasive and aims to call the audience to action.
• B. The author's tone is passionate due to excitement over the subject and personal narrative.
• C. The author's tone is informative and exhibits interest in the subject of the study.
• D. The author's tone is somber, depicting some anger at the state of insect larvae.

Correct answer: C

Rationale: Based on the author's tone in the excerpt, one can infer that the author's tone is informative. The author aims to educate the reader about the unique characteristics of insects, their habitats, and their life cycle. The tone is objective and descriptive, focusing on providing factual information rather than persuading or expressing passion or somberness. Choices A, B, and D are incorrect because there is no evident attempt to persuade, show excitement, or express anger in the text. Instead, the author's primary focus is on providing detailed information about the topic.

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