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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Verbal Ability | 34% | - Word Knowledge
|
| Topic 2: Mathematics | 28% | - Measurement
|
| Topic 3: Science | 38% | - Human Anatomy & Physiology
|
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NEW QUESTION # 67
Solve for x.
Answer: B
Explanation:
This problem involves solving a linear equation with fractions. First convert the mixed numberto an improper fraction or decimal.
Addto both sides to isolate the term with x:
Now divide both sides by 3:
Therefore, option D is correct. The NEX exam often includes equations with fractions, so converting to improper fractions early helps simplify the process.
NEW QUESTION # 68
A student is traveling out of the United States to visit family living in Europe. The room booked for the trip costs €120.00 per night.
Given that $1.00 (US dollar) is equal to €1.2, how much will it cost per night in US Dollars?
Answer: D
Explanation:
This problem involves currency conversion. The exchange rate states that $1 equals €1.2. To convert euros to dollars, divide the euro amount by 1.2. Set up the calculation: €120 ÷ 1.2 = $100. Therefore, the cost per night in US dollars is $100. Option C is correct. Option B incorrectly multiplies instead of dividing. Options A and D fail to account for the exchange rate. NEX math problems involving currency emphasize understanding the direction of conversion and selecting the correct operation.
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NEW QUESTION # 69
What is the result of crossing over during meiosis?
Answer: A
Explanation:
Crossing over is a key event that occurs during prophase I of meiosis. During this process, homologous chromosomes pair up and exchange corresponding segments of DNA. Specifically, non-sister chromatids exchange genetic material, which results in new combinations of alleles. The primary result of this exchange is increased genetic variation in gametes, which is essential for evolution and diversity within a species. While chiasmata are structures formed during crossing over, they describe the physical points of contact rather than the outcome of the process. Lining up at the metaphase plate and random assortment occur later during meiosis and are separate mechanisms of genetic variation. Therefore, the correct result of crossing over is the exchange of DNA segments between homologous chromosomes. This process ensures that offspring have unique genetic combinations that differ from both parents, which is a core concept tested on the NEX Science exam.
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NEW QUESTION # 70
Veins throughout the body contain structures, indicated by arrows, in the image below.
The structures shown in the image prevent which of the following from occurring?
Answer: D
Explanation:
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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NEW QUESTION # 71
Given that 1 foot = 12 inches and 3 feet = 1 yard, how many inches are in 2.5 yards?
Answer: C
Explanation:
This is a unit-conversion problem involving yards, feet, and inches. First, convert yards to feet. Since 1 yard equals 3 feet, multiply: 2.5 × 3 = 7.5 feet. Next, convert feet to inches using the given conversion of 12 inches per foot. Multiply: 7.5 × 12 = 90 inches. Therefore, the correct answer is C. Option A (72 inches) represents only 6 feet. Option B (45 inches) results from converting yards directly to inches incorrectly. Option D (54 inches) represents 4.5 feet. On the NEX exam, multi-step measurement conversions are common, and accuracy depends on converting one unit at a time rather than skipping steps.
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NEW QUESTION # 72
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