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| Section | Weight | Objectives |
|---|---|---|
| Science | 36.8% | - Biology
|
| Mathematics | 27.6% | - Data and Information
|
| Verbal Ability | 35.6% | - Reading Comprehension
|
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NEW QUESTION # 141
Which microorganism is considered harmful or causes disease?
Answer: A
Explanation:
A pathogen is any microorganism that causes disease in a host. Pathogens include bacteria, viruses, fungi, and parasites. Enzymes are proteins that speed up chemical reactions and are not microorganisms. Immune factors are components of the immune system that protect against disease. A vector is an organism, such as a mosquito or tick, that transmits pathogens but does not itself cause disease. The NEX Science exam commonly assesses understanding of infectious disease terminology and distinctions between disease-causing organisms and disease carriers. Recognizing pathogens as the direct cause of illness is a key concept in microbiology and public health.
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NEW QUESTION # 142
Review the scatter plot of hours students studied for a test and their results.
What can you conclude from the graph?
Answer: D
Explanation:
This question tests interpretation of scatter plots and correlation. In the graph, the horizontal axis represents hours studied, and the vertical axis represents test scores. As the points move from left to right (indicating more hours studied), the points also tend to move upward (indicating higher test scores). This shows a positive relationship between the two variables. While not every point follows a perfect line, the overall trend clearly indicates that students who studied more hours generally achieved higher test scores. Option B correctly describes this positive correlation. Option A is incorrect because scores are not highest when no studying occurs. Option C is incorrect because there is a visible relationship. Option D describes a negative relationship, which is not shown. On the NEX exam, scatter plots are often used to test understanding of trends rather than exact values, so identifying the overall direction of the data is key.
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NEW QUESTION # 143
Word Knowledge
The word"assist"most nearly means:
Answer: A
Explanation:
"Assist" means to help or support. Option B is the correct synonym. The remaining options describe actions that oppose assistance. NEX verbal questions frequently use healthcare-related vocabulary like assist, administer, and support.
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NEW QUESTION # 144
What is the result of crossing over during meiosis?
Answer: C
Explanation:
Crossing over is a key event that occurs during prophase I of meiosis. During this process, homologous chromosomes pair up and exchange corresponding segments of DNA. Specifically, non-sister chromatids exchange genetic material, which results in new combinations of alleles. The primary result of this exchange is increased genetic variation in gametes, which is essential for evolution and diversity within a species. While chiasmata are structures formed during crossing over, they describe the physical points of contact rather than the outcome of the process. Lining up at the metaphase plate and random assortment occur later during meiosis and are separate mechanisms of genetic variation. Therefore, the correct result of crossing over is the exchange of DNA segments between homologous chromosomes. This process ensures that offspring have unique genetic combinations that differ from both parents, which is a core concept tested on the NEX Science exam.
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NEW QUESTION # 145
Solve for y and round to the nearest tenth.
Answer: A
Explanation:
This equation involves a mixed number and rounding. First convert the mixed numberinto a decimal. Five divided by eight equals 0.625, so the mixed number becomes 2.625. The equation now reads:
2.625y + 0.25 = 64.
Subtract 0.25 from both sides to isolate the term with y:
2.625y = 63.75.
Next, divide both sides by 2.625:
y # 24.2857.
The question asks for the answer rounded to the nearest tenth. Rounding 24.2857 gives 24.3. Therefore, option A is correct. NEX math questions frequently combine fractions, decimals, and rounding, so converting to decimals early helps reduce errors.
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NEW QUESTION # 146
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