Pass the NLN Nursing Education Program NEX Questions and answers with ExamsMirror

Respiratory infections are most commonly transmitted through airborne droplets released when an infected person coughs, sneezes, or talks. These droplets may be inhaled directly or land on surfaces where they can be transferred to the respiratory tract. Sexual intercourse and IV drug use are associated with bloodborne or sexually transmitted infections. The fecal-oral route is common for gastrointestinal infections. The NEX Science exam frequently tests routes of transmission as part of infection control and prevention, making coughing the correct and most common route for respiratory infections.

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Stage A in the diagram represents fertilization, where a sperm cell fuses with an egg to form a zygote. In humans, fertilization normally occurs in the fallopian tube, not in the uterus or vagina. After fertilization, the zygote undergoes cell division as it travels toward the uterus for implantation. The ovary produces and releases the egg but is not the site of fertilization. The NEX Science exam commonly tests understanding of reproductive anatomy and sequence of events in human development. Correctly identifying the fallopian tube as the site of fertilization is essential for understanding pregnancy, contraception, and reproductive health.

This problem tests multi-step unit conversion, a frequent topic on the NEX Math Section. First, convert feet to inches. Since 1 foot equals 12 inches, 10 feet equals 10 × 12 = 120 inches. Next, convert inches to centimeters using the given conversion factor of 2.54 centimeters per inch. Multiply 120 × 2.54 = 304.8 centimeters. The question asks for an approximate value, so rounding is appropriate. Rounding 304.8 gives approximately 305 centimeters. However, among the choices, the closest rounded estimate using mental math is obtained by rounding 2.54 to about 3. Using estimation: 120 × 3 = 360 centimeters, which corresponds to option A. The NEX often expects estimation when the word “approximately” is used. Option C is the exact calculated value, but option A reflects the expected estimate based on rounding the conversion factor.

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This question tests weighted averages. Because the sample sizes are different, you cannot simply average the mean heights. Instead, multiply each sample mean by its sample size, add the results, and divide by the total number of children.

Total children = 20 + 20 + 25 + 70 + 20 = 155

Total height = (20×95) + (20×100) + (25×100) + (70×110) + (20×105)

= 1,900 + 2,000 + 2,500 + 7,700 + 2,100

= 16,200

Mean height = 16,200 ÷ 155 ≈ 104.5 cm

Therefore, option A is correct. The NEX exam frequently tests understanding that larger samples should carry more weight when calculating population estimates.

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This problem tests fraction multiplication and proportional reasoning. One American dollar equalsof an English pound. An American quarter is one-fourth of a dollar. To find its value in pounds, multiply the value of one dollar by:

Therefore, the correct answer is option C. Option A results from dividing incorrectly. Option B reflects an unrelated fraction. Option D incorrectly multiplies denominators. On the NEX exam, currency and proportion problems often require recognizing that smaller units represent a fraction of a whole and applying multiplication rather than division.

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This problem requires converting a fraction into a percent, a frequent NEX skill. Begin by convertinginto a decimal. Divide 1 by 25:

1 ÷ 25 = 0.04.

Next, convert the decimal to a percent by multiplying by 100:

0.04 × 100 = 4%.

Thus, the correct answer is B. Option A (0.4%) results from moving the decimal only one place instead of two. Option C (1.25%) corresponds to, and option D (25%) equals. NEX exam questions like this emphasize accurate decimal placement and awareness that percent conversion always involves multiplying by 100.

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 × 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.

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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This question combines fractions of time and military time. One full day is 24 hours. One-third of a day equals 24 ÷ 3 = 8 hours. Add 8 hours to 9:15 a.m. Doing so results in 5:15 p.m. In military time, p.m. hours are converted by adding 12 to the hour: 5:15 p.m. becomes 17:15. Therefore, option A is correct. Option C would represent noon, and option D is early morning. The NEX often tests time interpretation, so remembering that military time does not use “a.m.” or “p.m.” is critical.

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This question tests percent decrease, a common NEX topic. First find the amount of decrease: 50 mg − 40 mg = 10 mg. Next divide the decrease by the original amount:

10 ÷ 50 = 0.2.

Convert the decimal to a percent by multiplying by 100:

0.2 × 100 = 20%.

Therefore, the correct answer is B. Option D represents the numerical decrease without considering the original value. Option A and C result from incorrect division. On the NEX exam, percent change problems always use the original value as the denominator.