Nursing Elites

1. Which muscular chamber of the heart receives blood from the body and pumps it to the lungs?

• A. Right atrium
• B. Left atrium
• C. Right ventricle
• D. Left ventricle

Correct answer: A

Rationale: The correct answer is the right atrium. The right atrium receives deoxygenated blood from the body through the superior and inferior vena cava. It then pumps this deoxygenated blood to the lungs via the pulmonary artery for oxygenation. The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle. The right ventricle receives oxygen-poor blood from the right atrium and pumps it to the lungs. The left ventricle receives oxygenated blood from the left atrium and pumps it to the rest of the body.

2. When is a histogram preferred over a bar graph?

• A. Comparison between categories
• B. Frequency
• C. Percentages
• D. Proportions

Correct answer: B

Rationale: Histograms are specifically designed to display the frequency distribution of continuous data, showing the distribution of values over intervals or bins. On the other hand, bar graphs are used to compare different categories or discrete data points. Therefore, the correct answer is B. Choices A, C, and D are incorrect because histograms are not primarily used for comparing categories, percentages, or proportions, but rather for visualizing the distribution of frequencies within data intervals.

3. Based on the information given, what is spelunking?

• A. exploring inside a cave
• B. an outdoor adventure
• C. walking with a double stroller
• D. a hot, summer day

Correct answer: A

Rationale: The passage describes spelunking as 'hit the road towards it as soon as you can' and 'discover the wonders of the cool, dark earth even while it is weltering hot in the outside world.' This indicates that spelunking involves exploring inside a cave, making option A, 'exploring inside a cave,' the correct answer. Choices B, C, and D are incorrect as they do not align with the description of spelunking provided in the passage.

4. Which sentence contains a homonym?

• A. I need to bear the pain.
• B. She found a bear in the woods.
• C. I can't bear to see this.
• D. He bears a striking resemblance.

Correct answer: C

Rationale: The correct answer is C: 'I can't bear to see this.' The words 'bear' and 'bare' are homonyms, as they sound the same but have different meanings. Choice A does not contain a homonym; it correctly uses 'bear' in the context of enduring pain. Choice B uses 'bear' as a noun referring to the animal, not a homonym. Choice D uses 'bears' as a verb, not a homonym.

5. How many molecules of NADPH and ATP are required to reduce 6 molecules of CO2 to glucose via photosynthesis?

• A. 6 NADPH and 9 ATP
• B. 12 NADPH and 18 ATP
• C. 18 NADPH and 24 ATP
• D. 24 NADPH and 36 ATP

Correct answer: B

Rationale: During photosynthesis, 12 molecules of NADPH and 18 molecules of ATP are required to reduce 6 molecules of CO2 to glucose. NADPH and ATP are essential energy carriers in the process of photosynthesis. Choice A is incorrect because it underestimates the required molecules of both NADPH and ATP. Choices C and D overestimate the number of molecules needed, making them incorrect answers.

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