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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Mathematics | 28% | - Measurement
|
| Topic 2: Verbal Ability | 34% | - Word Knowledge
|
| Topic 3: Science | 38% | - Chemistry
|
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NEW QUESTION # 64
What are the inherited factors transmitted in an organism from generation to generation called?
Answer: B
Explanation:
Inherited factors that are passed from parents to offspring are known as an organism's genotype. The genotype refers to the genetic makeup of an organism, including the specific alleles inherited for each trait.
Heterozygote and homozygote describe specific combinations of alleles but do not refer to inherited factors as a whole. Phenotype refers to the observable traits of an organism, which result from the interaction between genotype and environment. The NEX Science exam often tests the distinction between genotype and phenotype, emphasizing that genotype represents the genetic instructions while phenotype represents the physical expression of those instructions.
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NEW QUESTION # 65
Reading Comprehension
Passage:
Sleep plays a critical role in memory consolidation. During certain stages of sleep, the brain processes and stores information learned throughout the day. Lack of sleep has been linked to impaired judgment, slower reaction times, and decreased academic performance.
Which conclusion is best supported by the passage?
Answer: C
Explanation:
The correct answer must be directly supported by the information in the passage. The passage clearly explains that sleep helps the brain process and store information, which is essential for memory consolidation. It also states that lack of sleep negatively affects cognitive abilities such as judgment and reaction time. Therefore, the conclusion that memory formation is affected by sleep is well supported. Option A is incorrect because the passage emphasizes mental and cognitive effects, not just physical health. Option C is directly contradicted by the passage's mention of impaired functioning due to lack of sleep. Option D exaggerates the information; while sleep affects academic performance, the passage does not claim it is the sole factor. On the NEX exam, supported-conclusion questions require selecting an answer that is neither too extreme nor unsupported by the passage.
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NEW QUESTION # 66
Which activity is the least effective method of preventing the spread of diarrheal infections?
Answer: A
Explanation:
Diarrheal infections are most often spread through the fecal-oral route, commonly due to contaminated hands, food, or water. Washing hands with soap and water is the most effective method for preventing transmission.
Antibacterial solutions and patient isolation also reduce spread. Wearing a mask is effective for preventing respiratory infections but offers little protection against diarrheal diseases. The NEX Science exam emphasizes appropriate infection-control strategies based on the mode of transmission, making mask use the least effective option in this scenario.
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NEW QUESTION # 67
A nurse needs to administer 0.75 liters of IV fluid over 3 hours. What is the flow rate in milliliters per hour?
(1 liter = 1,000 milliliters)
Answer: B
Explanation:
This question tests unit conversion and rate calculation, both of which are essential skills on the NEX Math Section, especially for medication and IV flow problems. First, convert liters to milliliters because flow rates are typically expressed in milliliters per hour. Since 1 liter equals 1,000 milliliters, multiply 0.75 liters by
1,000 to get 750 milliliters. Next, determine the flow rate by dividing the total volume by the total time. The fluid is administered over 3 hours, so divide 750 milliliters by 3 hours. This calculation gives 250 milliliters per hour. Therefore, the correct answer is option C. Option A results from dividing incorrectly, option B reflects underestimation, and option D would be correct only if the volume were larger. NEX exam questions often focus on proper setup of unit conversions before performing calculations. Always convert units first, then divide by time to find a rate.
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NEW QUESTION # 68
Express the fraction 3/15 as a percent.
Round to the nearest tenth place.
Answer: D
Explanation:
This problem tests fraction-to-percent conversion and rounding, a very common skill on the NEX Math Section. First, simplify the fraction if possible. The fraction 3/15 can be reduced by dividing both the numerator and denominator by 3. This gives 1/5. Simplifying first makes the calculation easier and reduces the chance of errors. Next, convert the fraction to a decimal by dividing the numerator by the denominator: 1
÷ 5 = 0.2. To convert a decimal to a percent, multiply by 100. Thus, 0.2 × 100 = 20.0%. The question asks for the answer rounded to the nearest tenth place. Since 20.0 already has one decimal place, no additional rounding is needed. Therefore, the correct answer is 20.0%, which corresponds to option A. Option B (0.2%) incorrectly leaves the value as a decimal percent. Option C (5.0%) is a common mistake from dividing 3 by
60. Option D (33.3%) would be correct for 1/3, not 3/15.
NEW QUESTION # 69
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