Nursing Elites

1. What is the main function of red blood cells?

• A. Transport oxygen
• B. Transport carbon dioxide
• C. Regulate blood pressure
• D. Regulate heart rate

Correct answer: A

Rationale: The correct answer is A: Transport oxygen. Red blood cells are primarily responsible for carrying oxygen from the lungs to the tissues in the body. Hemoglobin, a protein found in red blood cells, binds to oxygen in the lungs and releases it to cells throughout the body. This oxygen transport is essential for cellular respiration and energy production in the body. Red blood cells do not regulate blood pressure or heart rate; their main role is oxygen transport. Choices B, C, and D are incorrect because red blood cells do not transport carbon dioxide, regulate blood pressure, or regulate heart rate. These functions are primarily carried out by other components of the circulatory and regulatory systems.

2. Which of the following words is an example of a conjunction?

• A. Quickly
• B. But
• C. Very
• D. Apple

Correct answer: B

Rationale: The correct answer is "But". A conjunction is a word that connects words, phrases, or clauses. In this case, "But" is a conjunction used to indicate a contrast or opposition between ideas. The other choices, "Quickly", "Very", and "Apple", are not conjunctions. "Quickly" is an adverb, "Very" is an adverb, and "Apple" is a noun, none of which serve the function of connecting words, phrases, or clauses as conjunctions do.

3. What is hemoglobin?

• A. an enzyme
• B. a protein
• C. a lipid
• D. an acid

Correct answer: B

Rationale: Hemoglobin is a protein found in red blood cells that plays a crucial role in transporting oxygen from the lungs to the tissues and organs in the body. It is composed of four protein subunits, each containing a heme group that binds to oxygen molecules. Choice A is incorrect as hemoglobin is not an enzyme, but rather a protein. Choice C is incorrect as hemoglobin is not a lipid, but a protein. Choice D is incorrect as hemoglobin is not an acid, but a protein.

4. What is the volume of a cube with a side length of 3 cm?

• A. 9 cm³
• B. 27 cm³
• C. 18 cm³
• D. 12 cm³

Correct answer: B

Rationale: To find the volume of a cube, you cube the length of one side. In this case, the side length is 3 cm, so the volume is calculated as 3 cm * 3 cm * 3 cm = 27 cm³. Therefore, the correct answer is 27 cm³. Choice A (9 cm³), Choice C (18 cm³), and Choice D (12 cm³) are incorrect as they do not correctly calculate the volume of a cube with a side length of 3 cm.

5. Which of the following demonstrates correct punctuation of a quotation?

• A. "You should have never invited Shane to that party," said Jessica, "if you didn't want him to run into Blayne."
• B. "You should have never invited Shane to that party," said Jessica. "If you didn't want him to run into Blayne."
• C. "You should have never invited Shane to that party," said Jessica, "if you didn't want him to run into Blayne."
• D. "You should have never invited Shane to that party," said Jessica, "If you didn't want him to run into Blayne."

Correct answer: A

Rationale: Choice A is the correct answer as it demonstrates the correct punctuation of a quotation. In this sentence, the comma is correctly placed inside the quotation marks after 'party' and 'Blayne.' This follows the standard rule in punctuation where commas and periods should always be placed inside the closing quotation mark. Choices B, C, and D are incorrect. Choice B incorrectly places a period before the closing quotation mark after 'Jessica,' which is not necessary. Choice C misses a comma inside the quotation marks after 'party,' leading to incorrect punctuation. Choice D incorrectly capitalizes 'If' within the quotation, which is not part of the original sentence.

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