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| Section | Weight | Objectives |
|---|---|---|
| Science | 36.8% | - Human Anatomy
|
| Verbal Ability | 35.6% | - Word Knowledge
|
| Mathematics | 27.6% | - Numbers and Operations
|
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NEW QUESTION # 135
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 # 136
Which of the following structures is found only in bacterial cells, not in plant or animal cells?
Answer: C
Explanation:
Bacterial cells are classified as prokaryotic cells, meaning they lack a membrane-bound nucleus. Instead of a nucleus, bacteria contain their genetic material in a region called the nucleoid. The nucleoid is not surrounded by a membrane and is unique to prokaryotic cells. In contrast, plant and animal cells are eukaryotic and store their DNA inside a true nucleus. Cell membranes, ribosomes, and DNA are found in all living cells, including bacteria, plants, and animals. Ribosomes in bacteria are smaller than those in eukaryotic cells, but they serve the same function of protein synthesis. Because the nucleoid region is exclusive to bacteria and other prokaryotes, option C is the correct answer. The NEX Science section frequently tests differences between prokaryotic and eukaryotic cells, making this an important concept to master.
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NEW QUESTION # 137
The table below shows the average daily requirements of essential amino acids in the diet at various stages of human life.
Which of these amino acids is required in the greatest amount in the diet of toddlers?
Answer: B
Explanation:
This question requires interpreting data from a table, a common skill tested on the NEX Science exam.
Looking specifically at the column for toddlers, the amino acid with the highest listed requirement (measured in milligrams per kilogram of body mass per day) is leucine. Although lysine, valine, and phenylalanine with tyrosine are also required in significant amounts, leucine has the highest numerical value for toddlers. Leucine is an essential amino acid that plays a critical role in growth, tissue repair, and muscle protein synthesis, which are especially important during early childhood when rapid growth occurs. Because toddlers are in a phase of accelerated development, higher amounts of certain amino acids are required compared to adults.
The key to answering this question correctly is careful comparison of the numerical values within the toddler column, not overall trends across all age groups.
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NEW QUESTION # 138
When you increase the angle between your radius and humerus, the action is known as
Answer: B
Explanation:
Extension is the movement that increases the angle between two bones at a joint. When the arm straightens at the elbow, the angle between the radius and the humerus increases, which is extension. Flexion decreases the angle between bones, circumduction is a circular movement, and retraction refers to pulling a structure backward. Understanding anatomical movement terms is essential for the NEX Science exam, especially in questions related to joints and motion.
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NEW QUESTION # 139
Review the image of the human digestive tract shown below.
What is the principal process occurring in the region labeled 4?
Answer: C
Explanation:
Region 4 in the diagram corresponds to the large intestine. The primary function of the large intestine is the absorption of water and electrolytes from undigested food material. This process helps concentrate waste material into feces before elimination. Assimilation of fatty acids and synthesis of triglycerides occur primarily in the small intestine, especially within intestinal epithelial cells. Hydrolysis of proteins occurs mainly in the stomach and small intestine through the action of enzymes such as pepsin and proteases. The NEX Science exam often tests digestive system function by matching specific organs to their primary processes. Since water absorption is the defining function of the large intestine, option B is correct.
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NEW QUESTION # 140
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