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Nursing Elites

ATI TEAS 7

Biology

1. The Minimum Inhibitory Concentration (MIC) of an antibiotic refers to:

Correct answer: B

Rationale: Rationale: A) The lowest concentration that kills bacteria is known as the Minimum Bactericidal Concentration (MBC), not the Minimum Inhibitory Concentration (MIC). MIC is the lowest concentration of an antibiotic that inhibits visible growth of bacteria. B) The MIC of an antibiotic is the concentration at which bacterial growth is inhibited by 50%. This concentration is used to determine the effectiveness of an antibiotic against a specific bacterium. C) The time it takes for an antibiotic to work is not described by the MIC. MIC is a measure of concentration, not time. D) The spectrum of bacteria the antibiotic targets is not defined by the MIC. The MIC value is specific to a particular antibiotic and bacterium, regardless of the spectrum of activity of the antibiotic.

2. A hypothesis should be:

Correct answer: B

Rationale: Hypotheses guide scientific exploration by providing a framework for testing potential explanations.

3. The muscular tube connecting the mouth to the stomach is lined with a mucous membrane. What is the main function of this mucous membrane?

Correct answer: C

Rationale: The correct answer is C: Lubrication and protection. The mucous membrane lining the esophagus serves to provide lubrication for food as it travels from the mouth to the stomach, making it easier to swallow. Additionally, the mucous membrane protects the esophageal tissue from damage caused by the passage of food and liquids. This function is crucial in preventing irritation and inflammation of the esophagus, ensuring smooth and efficient digestion process. The mucous membrane does not secrete digestive enzymes (A), absorb nutrients (B), or store bile (D), as those functions are carried out by other digestive organs.

4. Choose the most appropriate word to complete the sentence "He was _____ about his upcoming presentation."

Correct answer: A

Rationale: "Apprehensive" implies a mild worry or nervousness, which best fits the context.

5. What is the main idea of the passage?

Correct answer: C

Rationale: B mentions Petra's architecture, but not its connection to trade. A and D are factually incorrect and not supported by the passage. Choice C accurately identifies Petra's rise and fall as tied to its position on the Silk Road, making it the main idea.

6. Which word best synonyms with the word "elated"?

Correct answer: C

Rationale: "Elated" and "excited" both convey feelings of happiness and enthusiasm.

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