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| Section | Objectives |
|---|---|
| Science | - Basic Chemistry
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| Verbal Skills | - Reading Comprehension
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| Mathematics | - Word Problems
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NEW QUESTION # 123
The graph below displays survey results.
Data in the graph indicate that
Answer: B
Explanation:
This question tests the ability to analyze and compare data presented in a bar graph. The graph shows both cigarette usage and nicotine vaping for total populations and underage populations in two different years.
When focusing on the underage population, the bars for nicotine vaping are clearly higher than those for cigarette usage in both years shown. This indicates that vaping is more prevalent than cigarette smoking among underage individuals. The graph does not show an increase in total cigarette usage, eliminating option B: While vaping is high overall, the clearest and most directly supported conclusion is specific to the underage population. The NEX Science exam frequently includes questions requiring students to identify the most accurate conclusion supported by data rather than making assumptions beyond what is shown.
Therefore, option A is the best answer.
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NEW QUESTION # 124
Reading Comprehension
Passage:
Vaccinations work by stimulating the immune system to recognize and fight specific pathogens. Once vaccinated, the body can respond more quickly if exposed to the disease in the future, often preventing illness entirely.
Which statement best explains how vaccines protect the body?
Answer: C
Explanation:
The passage explains that vaccines stimulate the immune system so it can recognize pathogens and respond more quickly in the future. This means vaccines act as a training mechanism for the immune system. Option C correctly reflects this explanation. Option A is incorrect because vaccines do not eliminate all bacteria permanently. Option B is the opposite of what the passage states, as vaccines strengthen immune response.
Option D is incorrect because vaccines are preventive, not treatments administered after symptoms appear.
NEX reading comprehension questions often test understanding of scientific processes explained in simple language, and correct answers usually restate information using different wording rather than introducing new ideas.
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NEW QUESTION # 125
Reading Comprehension
Passage:
Regular exercise helps maintain bone density and muscle strength. Weight-bearing activities such as walking and resistance training are especially important in preventing osteoporosis as people age.
Which activity mentioned in the passage helps prevent bone loss?
Answer: D
Explanation:
The passage specifically mentions weight-bearing activities as being important for maintaining bone density and preventing osteoporosis. Walking is a weight-bearing exercise because the bones must support the body's weight during movement. Option C is therefore correct. The passage does not mention stretching, swimming, or meditation. While swimming is good for cardiovascular health, it is not weight-bearing. On the NEX exam, detail questions often require recognizing examples given directly in the passage rather than applying outside knowledge. Selecting walking demonstrates accurate reading and attention to detail.
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NEW QUESTION # 126
Review the image below.
If each division in the ocular micrometer below equals 25 micrometers, what is the length of the oval?
Answer: D
Explanation:
This question tests measurement interpretation using an ocular micrometer, a skill often assessed on the NEX Science exam. An ocular micrometer is a scale placed in the eyepiece of a microscope and must be interpreted based on the given scale value. In this problem, each division equals 25 micrometers. By carefully counting the number of divisions spanned by the oval in the image, the oval covers8 divisions. To find the total length, the number of divisions is multiplied by the micrometer value per division: 8 ร 25 micrometers = 200 micrometers. The other answer choices represent common calculation errors, such as counting too few or too many divisions or using an incorrect multiplication factor. The key to these questions is slow, accurate counting and correct unit conversion. The NEX exam frequently includes microscopy-based questions to assess practical lab interpretation skills.
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NEW QUESTION # 127
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: C
Explanation:
This question focuses on cardiovascular anatomy and physiology. Veins contain one-way valves that are especially important in the limbs, where blood must travel against gravity to return to the heart. These valves open to allow blood to move toward the heart and close to prevent blood from flowing backward. The structures indicated by the arrows in the image represent venous valves. Without these valves, blood could pool in the veins, leading to conditions such as varicose veins. Forward flow of blood is promoted, not prevented, by these valves. They do not obstruct blood flow under normal conditions, nor do they prevent blood from leaking into tissues-that function is related to capillary structure. The NEX Science exam frequently tests the functional significance of anatomical structures, and recognizing that venous valves prevent backflow of blood is a key cardiovascular concept.
NEW QUESTION # 128
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