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| Section | Objectives |
|---|---|
| Topic 1: Mathematics | - Word Problems
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| Topic 2: Science | - Biology
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| Topic 3: Verbal Skills | - Reading Comprehension
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NEW QUESTION # 106
Reading Comprehension
Passage:
Vaccination programs rely on widespread participation to be effective. When a large portion of the population is vaccinated, herd immunity helps protect individuals who cannot be vaccinated.
What is the primary benefit of herd immunity?
Answer: D
Explanation:
The passage explains that herd immunity occurs when a large percentage of the population is vaccinated, which helps protect those who cannot receive vaccines. Option B correctly states this benefit. The passage does not suggest that herd immunity eliminates all diseases or replaces hygiene practices. It also does not mention reducing side effects. On the NEX exam, cause-and-effect questions require identifying the specific outcome discussed rather than making broad assumptions. Herd immunity's protective effect on vulnerable individuals is the key idea.
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NEW QUESTION # 107
A nutritionist recommends that a certain client getof his calories from fats,of his calories from proteins, and the remainder of his calories from carbohydrates.
What fraction of all calories should the client get from carbohydrates?
Answer: A
Explanation:
This problem tests fraction addition and subtraction within a real-world nutrition scenario, which is typical of the NEX Math Section. First, recognize that all calorie fractions must total 1 (or the whole). The client getsfrom fats andfrom proteins. To combine these fractions, find a common denominator. The least common denominator of 5 and 4 is 20. Convert the fractions:and. Add them together:. This represents the portion of calories from fats and proteins combined. To find the remainder from carbohydrates, subtract from 1:
Therefore, the correct answer is B. This type of problem reinforces careful fraction operations and understanding of "remainder" language on the NEX exam.
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NEW QUESTION # 108
In the human male, which of these structures produces sperm cells?
Answer: A
Explanation:
Sperm cells are produced in thetestes, specifically within tightly coiled structures called seminiferous tubules.
The process of sperm production is known as spermatogenesis and requires hormones such as testosterone.
Cowper's glands and the prostate gland do not produce sperm; instead, they secrete fluids that contribute to semen and help protect and nourish sperm cells. The epididymis is responsible for sperm maturation and storage but does not produce sperm. The NEX Science exam often tests reproductive anatomy by asking students to distinguish between sperm production, maturation, and transport. Understanding the specific role of each male reproductive structure is essential. Since only the testes are responsible for the formation of sperm cells, option C is the correct answer.
NEW QUESTION # 109
The graph displays a patient's systolic blood pressure taken daily from February 1 to May 2.
What is the apparent range of blood pressure over this period?
Answer: A
Explanation:
The range of a data set is calculated by subtracting the lowest value from the highest value. From the graph, the lowest systolic blood pressure reading appears to be about 125 mmHg, while the highest reading is about
185 mmHg. Subtracting gives: 185 # 125 = 60. Therefore, option B is correct. Option C represents a single high reading rather than a range. Options A and D underestimate the difference. NEX questions involving range require careful identification of extreme values on graphs, so it is important to examine the entire data set, not just the most common values.
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NEW QUESTION # 110
Word Knowledge
The word"contribute"most nearly means:
Answer: D
Explanation:
To contribute means to add to or help bring about a result. Option B is the correct synonym. The other options describe the opposite action. NEX vocabulary often includes cause-and-effect language.
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NEW QUESTION # 111
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