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| Section | Objectives |
|---|---|
| Topic 1: Mathematics | - Word Problems
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| Topic 2: Science | - Biology
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| Topic 3: Verbal Skills | - Language Usage
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NEW QUESTION # 110
Review the diagram below of the human eye.
Structure number 1 is necessary in order for the eye to
Answer: C
Explanation:
Structure number 1 in the diagram represents the lens of the eye. The lens plays a crucial role in focusing incoming light onto the retina so that clear images can be formed. It changes shape through a process called accommodation, allowing the eye to focus on objects at varying distances. Protection from debris is mainly the function of the cornea, eyelids, and eyelashes. Regulation of light entering the eye is controlled by the iris, which adjusts the size of the pupil. Picking up light stimuli is the role of rods and cones located in the retina.
Because the lens is responsible for bending and focusing light precisely onto the retina, option A is correct.
The NEX Science exam frequently tests the relationship between eye structures and their functions, particularly focusing mechanisms.
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NEW QUESTION # 111
You are staining bacterial samples for identification and viewing them under a microscope.
Which bacterial shape do you observe in the sample?
Answer: A
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 # 112
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 # 113
Word Knowledge
The word"observe"most nearly means:
Answer: B
Explanation:
To observe means to watch carefully or notice attentively. Option A best matches this definition. In healthcare contexts, observation is a critical skill, making this a high-yield NEX vocabulary term.
NEW QUESTION # 114
Reading Comprehension
Passage:
Hand hygiene is one of the most effective ways to prevent the spread of infection. Washing hands with soap and water removes many harmful microorganisms. When soap and water are not available, alcohol-based hand sanitizers can reduce the number of germs, though they are not effective against all pathogens.
Which statement is best supported by the passage?
Answer: B
Explanation:
The passage emphasizes the importance of hand hygiene in preventing infection. It clearly states that washing hands with soap and water removes harmful microorganisms and that sanitizers can reduce germs when soap is unavailable. This supports the conclusion that handwashing helps reduce the spread of infection. Option C directly reflects this main idea. Option A is incorrect because the passage notes that sanitizers are not effective against all pathogens. Option B contradicts the passage, which presents soap and water as the most effective method. Option D is false because the passage acknowledges that germs can exist on hands. On the NEX exam, supported-detail questions require selecting an answer that accurately restates information from the passage without exaggeration or contradiction.
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NEW QUESTION # 115
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