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It is similar to the NEX desktop-based software, with all the elements of the desktop practice exam. This NEX exam can be accessed from any browser and does not require installation. The NEX questions in the mock test are the same as those in the real exam. And candidates will be able to take the web-based NEX Practice Test immediately through any operating system and browsers.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Mathematics | 27.6% | - Numbers and Operations
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| Topic 2: Science | 36.8% | - Human Physiology
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| Topic 3: Verbal Ability | 35.6% | - Word Knowledge
|
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NEW QUESTION # 53
A symbiotic relationship where one organism benefits and the other is neither helped nor harmed is referred to as
Answer: D
Explanation:
Commensalism is a type of symbiotic relationship in which one organism benefits while the other is unaffected. An example is barnacles attaching to whales, where the barnacles gain transportation and access to food, while the whale is neither helped nor harmed. Mutualism benefits both organisms, parasitism benefits one while harming the other, and predation involves one organism killing another for food. Understanding ecological relationships is a key topic on the NEX Science exam, and recognizing the differences between types of symbiosis is essential.
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NEW QUESTION # 54
According to the Centers for Disease Control and Prevention (CDC), approximately 7% of children and adolescents ages 6 to 19 in the United States have a high total cholesterol. If 120,000 children and adolescents in that age range were sampled, approximately how many of them would have a normal total cholesterol?
Answer: C
Explanation:
This is a percentage complement problem. If 7% of children have high cholesterol, then the remaining percentage with normal cholesterol is 100% # 7% = 93%. Convert 93% to a decimal by moving the decimal point two places to the left: 0.93. Multiply this decimal by the total number of children sampled: 0.93 ร
120,000 = 111,600. Therefore, approximately 111,600 children would have normal cholesterol levels, making option D correct. Option A incorrectly calculates 7% instead of the complement. Option C represents 70%, not 93%. Option B is close but incorrect due to rounding. NEX math questions often assess whether students understand that "normal" refers to the remainder after subtracting the affected group.
NEW QUESTION # 55
Word Knowledge
The word"accurate"most nearly means:
Answer: D
Explanation:
"Accurate" means correct or free from error. Option B is the best synonym. The other options describe inaccuracy or uncertainty. Accuracy is a high-frequency NEX vocabulary word, especially in healthcare contexts.
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NEW QUESTION # 56
What is the term for small, clear vessels found near blood capillaries and responsible for draining excess interstitial fluid not reabsorbed into the blood?
Answer: D
Explanation:
Lymphatic capillaries are small, thin-walled vessels that collect excess interstitial fluid that is not reabsorbed by blood capillaries. This fluid, now called lymph, is transported through the lymphatic system and eventually returned to the bloodstream. This process helps maintain fluid balance and prevents tissue swelling. Arterioles and venules are part of the blood vascular system, not the lymphatic system. Immune capillaries are not a recognized anatomical structure. The NEX Science exam often tests the relationship between the circulatory and lymphatic systems, emphasizing the role of lymphatic capillaries in fluid regulation and immune defense.
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NEW QUESTION # 57
Which of the following will increase the amount of oxygen produced by a plant?
Answer: D
Explanation:
Oxygen is produced during the process of photosynthesis, which occurs in the chloroplasts of plant cells.
During photosynthesis, plants use carbon dioxide, water, and light energy to produce glucose and oxygen.
Carbon dioxide is one of the key raw materials required for this process. When the availability of carbon dioxide increases, the rate of photosynthesis can also increase, assuming that light and water are not limiting factors. As photosynthesis increases, more oxygen is released as a byproduct. Decreasing carbon dioxide would slow photosynthesis and reduce oxygen production. Glucose is a product of photosynthesis, not a reactant, so changing glucose levels does not directly increase oxygen output. Therefore, increasing available carbon dioxide is the correct answer. The NEX Science exam frequently tests understanding of the inputs and outputs of photosynthesis and how environmental factors affect the process.
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NEW QUESTION # 58
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