NEX Exam Dumps - NLN Nursing Education Program Questions and Answers

Veins contain one-way valves that prevent blood from flowing backward as it returns to the heart. These valves are especially important in veins of the arms and legs, where blood must move against gravity. When muscles contract, they push blood forward toward the heart, and the valves close behind it to prevent backflow. Without these valves, blood could pool in the veins, leading to conditions such as varicose veins. The valves do not obstruct blood flow under normal conditions, nor do they prevent blood from leaking into surrounding tissues—that function is related to capillary walls. The NEX Science exam often emphasizes understanding how anatomical structures support physiological function, making venous valves a key cardiovascular concept.

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“Reluctant” describes someone who is unwilling or hesitant to act. Option C best matches this meaning. The other options suggest eagerness or readiness, which are opposites. Context clues on the NEX often rely on emotional tone.

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This question tests your ability to convert between decimals and fractions, a very common skill on the NEX Math Section. Start by understanding the decimal value. The decimal 0.04 means four hundredths, which can be written as the fraction 4/100. The next step is to simplify this fraction by dividing both the numerator and the denominator by their greatest common factor, which is 2. Doing so gives 2/50. That fraction exactly matches option C, making it the correct answer. To verify, you can also convert 2/50 back into a decimal by dividing 2 by 50, which equals 0.04. The other options are incorrect because they represent much larger values. For example, 1/4 equals 0.25, 2/5 equals 0.4, and 2/500 equals 0.004. On the NEX exam, remembering that two decimal places correspond to hundredths can help you quickly form the correct fraction before simplifying.

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Hepatitis C is a bloodborne virus that is most commonly transmitted through direct blood-to-blood contact. Sharing needles allows contaminated blood to enter another person’s bloodstream, making it the primary mode of transmission. Hepatitis C is not spread through casual contact such as touching skin, coughing, or sharing drinks. Understanding transmission routes is essential for infection prevention and public health, and the NEX Science exam frequently emphasizes distinguishing between airborne, contact, and bloodborne diseases. Because hepatitis C spreads primarily through shared needles, option D is correct.

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Interpret means to explain or understand the meaning of information. Option B correctly defines the term. Interpretation skills are frequently referenced in healthcare and testing environments.

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The passage explains what antibiotics treat, what they do not treat, and the consequences of misuse. Its purpose is informational, focusing on responsible use to prevent resistance. Option C best captures this purpose. The other options either misrepresent or ignore the main focus. Purpose questions on the NEX often test whether the reader understandswhythe passage was written.

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Codominance occurs when two different alleles are both expressed in a heterozygous organism. In this case, the red and white alleles combine to produce an intermediate pink phenotype. Non-disjunction refers to chromosome separation errors, multiple alleles involve more than two allele types, and mutations involve DNA changes. The NEX Science exam frequently tests inheritance patterns, including codominance and incomplete dominance.

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This question combines fractions of time and military time. One full day is 24 hours. One-third of a day equals 24 ÷ 3 = 8 hours. Add 8 hours to 9:15 a.m. Doing so results in 5:15 p.m. In military time, p.m. hours are converted by adding 12 to the hour: 5:15 p.m. becomes 17:15. Therefore, option A is correct. Option C would represent noon, and option D is early morning. The NEX often tests time interpretation, so remembering that military time does not use “a.m.” or “p.m.” is critical.

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“Accurate” means correct or free from error. Option B is the best synonym. The other options describe inaccuracy or uncertainty. Accuracy is a high-frequency NEX vocabulary word, especially in healthcare contexts.

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Evaluate means to assess, judge, or determine the value or effectiveness of something. Option B is the correct synonym. Evaluation is a common term in healthcare and academic settings, making it a high-yield NEX word.