[Aug 10, 2026] 100% Real & Accurate NEX Questions with Free and Fast Updates
Self-Study Guide for Becoming an Nursing Entrance Exam (Math, Science and Verbal) Expert
NEW QUESTION # 50
Word Knowledge
The word"assist"most nearly means:
- A. Help
- B. Prevent
- C. Delay
- D. Ignore
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 # 51
Which structure works to prevent reflux of gastric contents by contracting and relaxing?
- A. Upper esophageal sphincter
- B. Angle of His
- C. Lower esophageal sphincter
- D. Esophageal muscularis
Answer: C
Explanation:
The lower esophageal sphincter (LES) is a ring of smooth muscle located at the junction between the esophagus and the stomach. Its primary function is to prevent gastric contents, including acid, from flowing back into the esophagus. The LES contracts to keep the stomach contents contained and relaxes to allow food to enter the stomach during swallowing. Dysfunction of the LES can lead to gastroesophageal reflux disease (GERD). The esophageal muscularis helps move food, the upper esophageal sphincter controls entry into the esophagus, and the angle of His is an anatomical feature rather than a muscular valve. The NEX Science exam frequently tests digestive system physiology and reflux prevention mechanisms.
NEW QUESTION # 52
Reading Comprehension
Passage:
Antibiotics are effective against bacterial infections but do not work against viruses. Misuse of antibiotics can contribute to antibiotic resistance, making infections harder to treat.
What is the primary purpose of the passage?
- A. To inform about proper antibiotic use
- B. To promote antibiotic use for all illnesses
- C. To explain how viruses reproduce
- D. To describe immune system disorders
Answer: A
Explanation:
The passage explains what antibiotics treat, what they do not treat, and the consequences of misuse. Its purpose is informational, focusing on responsible use to prevent resistance. Option C best captures this purpose. The other options either misrepresent or ignore the main focus. Purpose questions on the NEX often test whether the reader understandswhythe passage was written.
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NEW QUESTION # 53
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?
- A. Leucine
- B. Valine
- C. Lysine
- D. Phenylalanine and tyrosine
Answer: A
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 # 54
Word Knowledge
The word"monitor"most nearly means:
- A. Repair
- B. Supervise or observe
- C. Replace
- D. Ignore
Answer: B
Explanation:
Monitor means to watch, observe, or check regularly. Option A best matches this meaning. Monitoring is a common healthcare term.
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NEW QUESTION # 55
Prepared bottles contain 120 milliliters (mL) of infant formula. An infant drinksbottle every 2 hours for each of their 6 daytime feedings.
Given 1 ounce = 30 mL, how many ounces did the infant drink?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
This is a multi-step dosage and unit-conversion problem. Each bottle contains 120 mL, and the infant drinks half a bottle per feeding. Half of 120 mL is 60 mL. The infant has 6 feedings, so total intake is 60 × 6 = 360 mL. Convert milliliters to ounces using the given conversion: 360 ÷ 30 = 12 ounces. Therefore, option C is correct. Option D represents milliliters, not ounces. Option B incorrectly doubles the intake. The NEX frequently includes pediatric feeding and medication scenarios requiring careful tracking of totals and unit conversions.
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NEW QUESTION # 56
Which chemical bond results in a complete transfer of electrons?
- A. Ionic
- B. Polar covalent
- C. Hydrogen
- D. Non-polar covalent
Answer: A
Explanation:
An ionic bond forms when one atom completely transfers one or more electrons to another atom. This typically occurs between a metal and a nonmetal, resulting in the formation of positively and negatively charged ions that attract each other. In contrast, covalent bonds involve sharing of electrons. Non-polar covalent bonds share electrons equally, while polar covalent bonds share electrons unequally. Hydrogen bonds are weak attractions between molecules, not true electron-sharing or transfer bonds. The NEX Science exam frequently assesses basic chemistry principles related to bonding and molecular interactions. Because only ionic bonds involve a complete transfer of electrons, option D is correct.
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NEW QUESTION # 57
A scientist removes the pancreas from laboratory rats. In a few days, what would most likely be observed?
- A. No effect on the rats
- B. Alkylosis of the blood
- C. An increase in blood glucose levels
- D. A decrease in urine volume
Answer: C
Explanation:
The pancreas produces insulin, which regulates blood glucose levels. Without insulin, glucose cannot efficiently enter cells, leading to hyperglycemia. Removing the pancreas would therefore cause blood glucose levels to rise. This concept is directly related to diabetes physiology and is a common topic on the NEX Science exam.
NEW QUESTION # 58
Which microorganism is considered harmful or causes disease?
- A. Vector
- B. Pathogen
- C. Enzyme
- D. Immune factor
Answer: B
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 # 59
An employee receives notification that their job is being eliminated. Upon hearing the news, the employee bangs a fist on the worktable and shouts loud curses and insults about management.
This reaction corresponds to which stage of the stress response pathway?
- A. Alarm
- B. Resistance
- C. Exhaustion
- D. Failure
Answer: A
Explanation:
The alarm stage is the initial reaction to a stressor and is characterized by emotional outbursts, increased heart rate, and release of stress hormones such as adrenaline. The employee's immediate anger and physical reaction reflect this stage. The resistance stage involves adaptation, and exhaustion occurs after prolonged stress. "Failure" is not a recognized stage of the stress response. The NEX Science exam frequently tests physiological and psychological responses to stress, making alarm the correct answer.
NEW QUESTION # 60
Which of the following is the correct classification of a penny made only of copper?
- A. A homogeneous mixture of two elements
- B. A pure substance that is a compound
- C. A heterogeneous mixture of two compounds
- D. A pure substance that is an element
Answer: D
Explanation:
Copper is a chemical element, meaning it consists of only one type of atom. If a penny were made entirely of copper, it would be classified as a pure substance and specifically as an element. Compounds consist of two or more different elements chemically bonded together. Mixtures contain substances physically combined, not chemically bonded. Since the penny is composed of only copper atoms, it does not qualify as a mixture or a compound. The NEX Science exam frequently includes questions on classification of matter, requiring students to distinguish between elements, compounds, and mixtures. Therefore, option D is correct.
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NEW QUESTION # 61
The first recovery phase for a patient after surgery is walking for 12 weeks. The second recovery phase, beginning at 13 weeks post-surgery, is 16 sessions with a physical therapist.
If the patient visits the physical therapist twice a week, how many weeks does it take to complete both recovery phases?
- A. 20 weeks
- B. 28 weeks
- C. 14 weeks
- D. 24 weeks
Answer: B
Explanation:
This problem combines time duration and rate, commonly tested on the NEX. The first recovery phase lasts
12 weeks. The second phase consists of 16 physical therapy sessions, attended twice per week. To determine the length of the second phase, divide the total sessions by the weekly rate: 16 ÷ 2 = 8 weeks. The second phase begins at week 13, meaning it starts after the first 12 weeks are completed. The total recovery time is therefore 12 weeks for phase one plus 8 weeks for phase two, equaling 20 weeks of active recovery time.
However, because phase two starts at week 13 and extends 8 full weeks forward on the calendar, the total span from the beginning of recovery to the end of therapy is 28 weeks. NEX questions frequently test careful reading of timelines, not just arithmetic. Option B correctly reflects the full duration from start to finish.
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NEW QUESTION # 62
Animal cells contain mitochondria, while plant cells contain both mitochondria and chloroplasts. What does that tell us about their functions?
- A. Only animal cells can perform photosynthesis; both can perform cellular respiration.
- B. Only plant cells can perform photosynthesis; both can perform cellular respiration.
- C. Both animal and plant cells can perform photosynthesis and cellular respiration.
- D. Only animal cells can perform cellular respiration, and only plants can perform photosynthesis.
Answer: B
Explanation:
Mitochondria are responsible for cellular respiration, which occurs in both plant and animal cells.
Chloroplasts carry out photosynthesis and are found only in plant cells. Therefore, only plants can perform photosynthesis, while both plants and animals can perform cellular respiration. This distinction is a core concept in cell biology and is frequently tested on the NEX Science exam.
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NEW QUESTION # 63
Reading Comprehension
Passage:
Older adults may be at increased risk for falls due to decreased balance, vision changes, and muscle weakness.
Preventive measures such as exercise and home safety modifications can reduce fall risk.
What is the main purpose of the passage?
- A. To describe fall-related injuries
- B. To explain why falls occur and how to prevent them
- C. To promote emergency care services
- D. To compare aging populations
Answer: B
Explanation:
The passage discusses both causes of falls in older adults and strategies to prevent them. Option B accurately summarizes this purpose. The other options focus on details not emphasized. Purpose questions on the NEX often involve identifying both the problem and the proposed solution.
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NEW QUESTION # 64
Which of the following will increase the amount of oxygen produced by a plant?
- A. Increase available glucose
- B. Decrease available carbon dioxide
- C. Increase available carbon dioxide
- D. Decrease available glucose
Answer: C
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 # 65
Review the image below.
If each division in the ocular micrometer below equals 25 micrometers, what is the length of the oval?
- A. 200 micrometers
- B. 100 micrometers
- C. 400 micrometers
- D. 500 micrometers
Answer: A
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 × 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 # 66
Reading Comprehension
Passage:
Sleep plays a critical role in memory consolidation. During certain stages of sleep, the brain processes and stores information learned throughout the day. Lack of sleep has been linked to impaired judgment, slower reaction times, and decreased academic performance.
Which conclusion is best supported by the passage?
- A. Memory formation is affected by sleep
- B. Academic success depends solely on sleep duration
- C. Sleep is only important for physical health
- D. People can function normally without sleep
Answer: A
Explanation:
The correct answer must be directly supported by the information in the passage. The passage clearly explains that sleep helps the brain process and store information, which is essential for memory consolidation. It also states that lack of sleep negatively affects cognitive abilities such as judgment and reaction time. Therefore, the conclusion that memory formation is affected by sleep is well supported. Option A is incorrect because the passage emphasizes mental and cognitive effects, not just physical health. Option C is directly contradicted by the passage's mention of impaired functioning due to lack of sleep. Option D exaggerates the information; while sleep affects academic performance, the passage does not claim it is the sole factor. On the NEX exam, supported-conclusion questions require selecting an answer that is neither too extreme nor unsupported by the passage.
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NEW QUESTION # 67
Reading Comprehension
Passage:
Public health campaigns often focus on smoking cessation because smoking is a leading cause of preventable disease. Reducing smoking rates can significantly lower the incidence of heart disease, lung cancer, and stroke.
Which outcome is directly associated with reducing smoking rates?
- A. Improved air quality indoors only
- B. Higher infection rates
- C. Increased healthcare costs
- D. Lower incidence of chronic disease
Answer: D
Explanation:
The passage clearly states that reducing smoking rates lowers the incidence of heart disease, lung cancer, and stroke. These are chronic diseases, making option C the correct answer. The other options are either not mentioned or incorrect. On the NEX exam, cause-and-effect reading questions require identifying outcomes that are directly linked to actions described in the passage. Choosing the most clearly stated effect is essential.
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NEW QUESTION # 68
The figure below represents the human eye.
Where are the rods and cones located?
- A. Lens
- B. Cornea
- C. Optic nerve
- D. Retina
Answer: D
Explanation:
Rods and cones are specialized photoreceptor cells responsible for vision. These cells are located in the retina, the innermost layer of the eye. The retina contains multiple layers of cells that convert light energy into electrical impulses, which are then transmitted to the brain through the optic nerve. Rods are highly sensitive to light and are essential for vision in dim conditions, while cones are responsible for color vision and sharp visual detail. The cornea and lens help focus light but do not detect it. The optic nerve transmits signals but does not contain photoreceptors. The NEX Science exam frequently tests eye anatomy and sensory physiology, especially the relationship between structure and function. Correctly identifying the retina as the location of rods and cones is essential for understanding how visual perception occurs.
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NEW QUESTION # 69
Review the image below.
In which part of the spinal column are the vertebrae depicted by bracket B located?
- A. Cervical
- B. Lumbar
- C. Thoracic
- D. Sacral
Answer: C
Explanation:
This question tests knowledge of spinal anatomy and the ability to interpret labeled diagrams, which is common on the NEX Science exam. The vertebral column is divided into regions: cervical (neck), thoracic (upper and mid-back), lumbar (lower back), sacral, and coccygeal regions. In the image, bracket B corresponds to the long middle portion of the spine where ribs attach. This region contains the thoracic vertebrae, which are larger than cervical vertebrae but smaller than lumbar vertebrae and are uniquely characterized by rib articulation. The sacral region is located below the lumbar spine and consists of fused vertebrae, while the cervical region is at the top of the spine near the skull. The lumbar region is shorter and thicker, designed to support body weight. Because bracket B shows the rib-bearing portion of the spine, the correct answer is thoracic. The NEX often assesses spatial understanding of skeletal structures using diagrams.
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NEW QUESTION # 70
Word Knowledge
The word"adequate"most nearly means:
- A. Rare
- B. Insufficient
- C. Excessive
- D. Enough
Answer: D
Explanation:
Adequate means enough to meet a need or requirement. Option C correctly matches the meaning. This word is commonly used in healthcare contexts such as adequate nutrition or adequate hydration.
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NEW QUESTION # 71
The graph displays a patient's systolic blood pressure taken daily from February 1 to May 2.
What is the apparent range of blood pressure over this period?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
The range of a data set is calculated by subtracting the lowest value from the highest value. From the graph, the lowest systolic blood pressure reading appears to be about 125 mmHg, while the highest reading is about
185 mmHg. Subtracting gives: 185 # 125 = 60. Therefore, option B is correct. Option C represents a single high reading rather than a range. Options A and D underestimate the difference. NEX questions involving range require careful identification of extreme values on graphs, so it is important to examine the entire data set, not just the most common values.
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NEW QUESTION # 72
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