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Nursing Elites

ATI TEAS 7

Chemistry

1. The process of a gas changing directly into a solid is called:

Correct answer: B

Rationale: This process, also known as sublimation, involves gas particles losing energy and transitioning directly into the solid state.

2. Based on the passage, the author's attitude towards online learning is likely to be

Correct answer: C

Rationale: The emphasis on both benefits and challenges suggests a balanced and pragmatic perspective, aligning with C.

3. What is the valve that prevents blood from flowing back from the left ventricle into the left atrium?

Correct answer: B

Rationale: The correct answer is B: Mitral valve. The mitral valve, also known as the bicuspid valve, is located between the left atrium and the left ventricle. Its primary function is to prevent the backflow of blood from the left ventricle into the left atrium during ventricular contraction. The tricuspid valve is located between the right atrium and right ventricle, the aortic valve is located between the left ventricle and the aorta, and the pulmonic valve is located between the right ventricle and the pulmonary artery. Therefore, the mitral valve is specifically responsible for preventing backflow in the left side of the heart, making it the correct answer.

4. How can you differentiate between a bacterial and viral infection based solely on symptoms?

Correct answer: B

Rationale: Option B is the correct answer because bacterial infections are typically treated with antibiotics, while viral infections do not respond to antibiotics. This is a key differentiating factor between the two types of infections. While some symptoms may overlap between bacterial and viral infections, the response to antibiotic treatment is a reliable indicator. It's important to note that solely relying on symptoms to differentiate between bacterial and viral infections can be challenging since many symptoms can be similar. Therefore, the response to antibiotics is a more definitive way to distinguish between the two types of infections.

5. How is the density of a substance calculated?

Correct answer: A

Rationale: Density is the mass per unit volume of a substance.

6. Which term describes the ability of a muscle to return to its original length and shape after being stretched or contracted?

Correct answer: b

Rationale: The correct answer is B: "Elasticity." Elasticity is the term that describes the ability of a muscle to return to its original length and shape after being stretched or contracted. Contractility refers to the muscle's ability to contract forcefully, extensibility is the ability of a muscle to be stretched without being damaged, and excitability is the ability of a muscle to respond to stimuli. In this context, elasticity specifically pertains to the muscle's ability to bounce back to its original form, making it the most appropriate term in relation to the question.

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