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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Science | 38% | - Health
|
| Topic 2: Verbal Ability | 34% | - Reading Comprehension
|
| Topic 3: Mathematics | 28% | - Data & Information
|
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NEW QUESTION # 41
Four students were comparing their test scores on an exam. All questions were worth the same number of points.
* Student A: 19 out of 26
* Student B: 75 out of 100
* Student C: 71%
* Student D: 0.719
Which student scored the highest on the exam?
Answer: C
Explanation:
This problem requires comparing fractions, percentages, and decimals by converting them to the same form.
Convert each score to a decimal. Student A: 19 ÷ 26 # 0.731. Student B: 75 ÷ 100 = 0.75. Student C: 71% =
0.71. Student D: already given as 0.719. Comparing these values, 0.75 is the highest. Therefore, Student B scored the highest. Option D (0.719) is close but still lower than 0.75. The NEX frequently tests comparison skills across different numerical formats, so converting everything to decimals is the safest approach.
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NEW QUESTION # 42
On Isle Royale, the natural predator of the moose is the wolf. In 1970, the moose population on Isle Royale was almost double that of wolves. By 1980, the moose population had been reduced to half that of 1970, while the number of wolves had almost tripled.
Which of the following statements best explains these events?
Answer: B
Explanation:
This question tests understanding of predator-prey relationships, a key ecology concept on the NEX Science exam. Wolves are the natural predators of moose on Isle Royale. When the moose population was initially high, there was an abundant food supply for wolves. This allowed the wolf population to increase significantly. As the number of wolves increased, predation pressure on the moose population also increased, leading to a sharp decline in moose numbers. This inverse relationship between predator and prey populations is a classic ecological pattern. There is no evidence in the question to suggest disease, human hunting, or breeding rate differences as the primary cause. Instead, the changes in population sizes are best explained by increased predation. The NEX often assesses whether students can interpret real-world ecological data and recognize how population dynamics are influenced by natural predator-prey interactions.
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NEW QUESTION # 43
In which biochemical family do starch and glycogen belong?
Answer: C
Explanation:
Starch and glycogen are both polysaccharides, which are complex carbohydrates composed of many glucose units. Starch is the primary storage form of glucose in plants, while glycogen is the storage form of glucose in animals, particularly in the liver and muscles. Carbohydrates serve as a major energy source for cells. Nucleic acids store genetic information, proteins perform structural and enzymatic functions, and lipids are involved in energy storage and membrane structure. The NEX Science exam often tests classification of biomolecules and their functions, making carbohydrates the correct answer.
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NEW QUESTION # 44
Word Knowledge
The word"beneficial"most nearly means:
Answer: C
Explanation:
"Beneficial" describes something that produces a positive effect or advantage. "Helpful" is the closest synonym. The other options do not match the meaning. NEX vocabulary questions often test commonly used healthcare-related words.
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NEW QUESTION # 45
You are staining bacterial samples for identification and viewing them under a microscope.
Which bacterial shape do you observe in the sample?
Answer: C
Explanation:
This question tests knowledge of bacterial morphology, which is commonly assessed on the NEX Science exam. Bacteria are often classified based on their shape, which helps in identification and diagnosis. The image shows elongated, rod-shaped bacteria. This shape is characteristic ofbacilli. Bacilli are cylindrical or rod-like and are commonly found in many bacterial species, includingEscherichia coliandBacillus anthracis.
Cocci are spherical in shape, spirochetes are long and spiral-shaped, and vibrios have a curved, comma-like appearance. None of these shapes match the straight rod-like structures shown in the image. Identifying bacterial shape is an important first step in microbiology before further tests such as Gram staining or biochemical analysis are performed. The NEX exam frequently uses images or descriptions to assess whether students can correctly distinguish between cocci, bacilli, spirilla/spirochetes, and vibrios based on visual characteristics. Recognizing bacilli as rod-shaped bacteria is a key foundational concept.
NEW QUESTION # 46
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