Nursing Elites

1. What is the purpose of sodium bicarbonate when released into the lumen of the small intestine?

• A. It works to chemically digest fats in the chyme.
• B. It decreases the pH of the chyme to prevent harm to the intestine.
• C. It works to chemically digest proteins in the chyme.
• D. It increases the pH of the chyme to prevent harm to the intestine.

Correct answer: D

Rationale: Sodium bicarbonate, when released into the lumen of the small intestine, functions to increase the pH of the acidic chyme coming from the stomach. This increase in pH helps neutralize the acidity of the chyme, creating a more optimal environment for the digestive enzymes in the small intestine to function properly. Maintaining a slightly basic pH in the small intestine is crucial for overall digestion and absorption of nutrients. Choices A, B, and C are incorrect. Sodium bicarbonate does not chemically digest fats or proteins in the chyme, and it does not decrease the pH of the chyme as it actually increases the pH to prevent harm to the intestine.

2. Which of the following best describes the theme of the passage?

• A. Patronizing
• B. Skeptical
• C. Objective
• D. Nostalgic

Correct answer: C

Rationale: The correct answer is C: 'Objective.' The passage presents a factual account of Clara Barton's life events without showing bias or personal feelings. The text outlines significant milestones in Barton's life chronologically, from her birth to her contributions during and after the Civil War, culminating in her advocacy for the establishment of an American branch of the International Red Cross Organization. The passage does not exhibit a patronizing tone (choice A), as it does not talk down to Barton or belittle her achievements. It is also not skeptical (choice B), as it does not express doubt or disbelief in the information presented. Furthermore, the passage is not nostalgic (choice D), as it does not dwell on sentimental feelings or memories of the past. Therefore, 'Objective' is the most suitable description of the passage's theme.

3. After a twelve-hour workday, James was exhausted when he heard the news.

• A. .
• B. ;
• C. ,
• D. —

Correct answer: C

Rationale: The comma (,) is used to separate the introductory clause 'After a twelve-hour workday' from the main clause 'James was exhausted when he heard the news.' This punctuation correctly indicates the relationship between the two clauses without interrupting the flow of the sentence. Choice A (.), a period, would create two separate sentences, which is not appropriate in this context. Choice B (;) is too strong of a pause and semicolons are typically used to connect closely related independent clauses. Choice D (—) is an em dash, which is used to set off an abrupt break or interruption in the sentence, not to separate an introductory clause from the main clause.

4. Which element's neutral atom has 2 electrons in the first shell and 6 electrons in the second shell of the electron cloud?

• A. Beryllium
• B. Carbon
• C. Helium
• D. Oxygen

Correct answer: D

Rationale: The correct answer is Oxygen. Oxygen has a total of 8 electrons, with 2 in the first shell and 6 in the second shell. This configuration matches the description provided in the question. Choice A, Beryllium, has 2 electrons in total, so it cannot have 2 in the first shell and 6 in the second. Choice B, Carbon, has 6 electrons in total, so it also does not match the given electron distribution. Choice C, Helium, has only 2 electrons in total and therefore does not fit the electron configuration described in the question.

5. In physics, what does the term 'terminal velocity' refer to?

• A. Maximum velocity reached by an object in free fall
• B. Velocity when the object is at rest
• C. Instantaneous velocity of an object
• D. Velocity only reached by heavy objects

Correct answer: A

Rationale: Terminal velocity in physics refers to the maximum velocity achieved by an object in free fall when the force of gravity equals the force of air resistance. At terminal velocity, the object stops accelerating and maintains a constant speed. This occurs when the opposing forces are balanced, leading to no further increase in speed. Choice B is incorrect as velocity when the object is at rest is zero, not at terminal velocity. Choice C is incorrect as instantaneous velocity refers to the velocity at a specific moment in time, not the maximum speed reached in free fall. Choice D is incorrect because terminal velocity is not exclusive to heavy objects; all objects in free fall can reach terminal velocity under the right conditions.

Similar Questions