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Nursing Elites

ATI TEAS 7

Biology

1. What is the difference between DNA and RNA?

Correct answer: B

Rationale: Rationale: A) Incorrect. DNA is double-stranded, but RNA is typically single-stranded. B) Correct. DNA contains deoxyribose sugar, which lacks an oxygen atom on the 2' carbon of the sugar ring, while RNA contains ribose sugar, which has an additional hydroxyl group on the 2' carbon. C) Incorrect. RNA contains the nitrogenous base uracil, while DNA contains thymine. D) Incorrect. DNA and RNA have distinct structures and functions, so they are not identical molecules.

2. Electrons occupy specific energy levels around the nucleus, but not in fixed orbits. This concept is captured by the:

Correct answer: B

Rationale: Quantum mechanical model. Unlike the Bohr model with its defined electron paths, the quantum mechanical model uses probability distributions to describe electron locations within energy levels.

3. What is the tone of the following sentence: "The presentation was informative and engaging."

Correct answer: B

Rationale: The sentence objectively describes the presentation without expressing any specific emotions.

4. Which additional information would be MOST helpful in further understanding the issue of microplastics?

Correct answer: B

Rationale: Understanding the specific microbes used in bioremediation would directly contribute to knowledge about the solution proposed in the passage.

5. Which word completes the sentence "He was ____ by the unexpected turn of events."

Correct answer: B

Rationale: "Bewildered" best describes the confusion caused by the unexpected events.

6. The pH scale is used to indicate the concentration of:

Correct answer: A

Rationale: The pH scale measures the concentration of hydrogen ions in a solution, indicating acidity or basicity.

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