Nursing Elites

1. Which term refers to the relaxation of the heart muscle?

• A. Diastole
• B. Systole
• C. Asystole
• D. Cardiastole

Correct answer: A

Rationale: The correct answer is A: Diastole. Diastole is the phase of the heartbeat when the heart muscle relaxes, allowing the chambers to fill with blood. Systole, on the other hand, refers to the contraction phase of the heart when it pumps blood out. Asystole is the absence of heart contractions, often referred to as cardiac arrest. Cardiastole is not a recognized medical term in relation to heart muscle relaxation, making it an incorrect choice.

2. Which nitrogenous bases pair with each other in DNA?

• A. A-G and T-C
• B. A-T and C-G
• C. A-T and T-T
• D. C-C and G-G

Correct answer: B

Rationale: In DNA, nitrogenous bases pair with each other in a specific manner known as complementary base pairing. Adenine (A) always pairs with Thymine (T), and Cytosine (C) always pairs with Guanine (G). This pairing is essential for maintaining the structure and function of DNA. Option B is the correct answer as it correctly identifies the nitrogenous bases that pair with each other in DNA. Choices A, C, and D are incorrect because they do not follow the established base pairing rules in DNA. A-T and C-G are the complementary base pairs in DNA, ensuring the stability and replication fidelity of the genetic material.

3. Which property of a substance refers to its ability to be hammered or pressed into thin sheets without breaking?

• A. Malleability
• B. Ductility
• C. Viscosity
• D. Conductivity

Correct answer: A

Rationale: Malleability is the correct answer as it is the property of a substance that allows it to be hammered or pressed into thin sheets without breaking. This property is crucial for materials like metals that need to be shaped without breaking. Ductility, on the other hand, refers to the ability of a substance to be drawn into thin wires, not hammered into sheets. Viscosity is a measure of a fluid's resistance to flow, indicating its thickness or thinness, and is unrelated to the ability to be hammered. Conductivity, on the other hand, refers to a substance's ability to conduct electricity or heat, which is not related to its ability to be hammered or pressed into thin sheets.

4. Which sentence correctly uses the colon?

• A. She had one wish: to visit Paris.
• B. She had: one wish to visit Paris.
• C. She had one: wish to visit Paris.
• D. She had one wish: visit Paris.

Correct answer: A

Rationale: The correct answer is A: "She had one wish: to visit Paris." A colon is used after a complete sentence to introduce a list, quotation, or explanation. In choice A, the colon is appropriately used after the complete sentence 'She had one wish' to introduce the explanation 'to visit Paris.' Choices B, C, and D incorrectly place the colon in positions that do not follow a complete sentence or do not properly introduce an explanation, making them grammatically incorrect.

5. The old clock hadn't worked in years, and _____ Ally finally decided to take it off the wall. Which of the following transition words or phrases is most appropriate to complete the sentence?

• A. as a result
• B. conversely
• C. then again
• D. similarly

Correct answer: A

Rationale: The correct answer is 'as a result.' This transition word is most suitable in this context as it indicates a logical consequence. The old clock not working for years led to Ally deciding to take it off the wall. Choices B, C, and D are incorrect. 'Conversely' suggests a contrast, 'then again' implies reconsideration or a contrasting point, and 'similarly' indicates a comparison, none of which align with the cause-and-effect relationship presented in the sentence.

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