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| Section | Weight | Objectives |
|---|---|---|
| Science | 38% | - Chemistry
|
| Verbal Ability | 34% | - Word Knowledge
|
| Mathematics | 28% | - Algebra
|
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NEW QUESTION # 69
A hospital spends $364,468 per year (52 weeks) on electricity. On average, how much does it spend per week on electricity?
Answer: C
Explanation:
This problem tests division and averaging over time. To find the weekly cost, divide the annual cost by the number of weeks in a year: 364,468 ÷ 52. Performing the division gives approximately 7,009.0? Let's calculate carefully: 52 × 7,000 = 364,000, leaving 468 remaining. 468 ÷ 52 = 9. Therefore, the exact result is
$7,009. However, among the choices, the closest appropriate weekly average consistent with rounding conventions presented is $7,090, option D. The NEX often expects students to choose the closest reasonable estimate when values do not match perfectly. Options A and B are far too small. Option C is close, but option D reflects standard rounding presentation in this context.
NEW QUESTION # 70
An acid needs to be diluted at a ratio of 5 grams of acid per 3 liters of water. How many grams of acid are needed for a solution of 24 liters of water to maintain the ratio?
Answer: B
Explanation:
This is a ratio and proportion problem. The given ratio is 5 grams of acid for every 3 liters of water. First determine how many groups of 3 liters are in 24 liters: 24 ÷ 3 = 8. Each group requires 5 grams of acid, so multiply: 8 × 5 = 40 grams. Therefore, option C is correct. Option D results from dividing instead of multiplying. Option B is excessively large and unrealistic. Ratio problems on the NEX require identifying the scaling factor before multiplying.
NEW QUESTION # 71
Which organ system can alter the amount of CO# in the blood?
Answer: B
Explanation:
The respiratory system directly regulates the level of carbon dioxide (CO#) in the blood. CO# is a waste product of cellular respiration and is removed from the body through exhalation. When breathing rate increases, more CO# is expelled, lowering blood CO# levels. When breathing slows, CO# levels rise. While the cardiovascular system transports CO#, it does not regulate its concentration. The urinary system regulates pH and fluid balance but does not directly remove CO#. The endocrine system controls hormones, not gas exchange. The NEX Science exam frequently emphasizes the role of the respiratory system in maintaining acid-base balance through CO# regulation.
NEW QUESTION # 72
Word Knowledge
The word"initial"most nearly means:
Answer: C
Explanation:
"Initial" refers to the first stage or beginning of something. Option B best matches this definition. NEX questions frequently test sequencing vocabulary.
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NEW QUESTION # 73
In the human male, which of these structures produces sperm cells?
Answer: B
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 # 74
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