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| Section | Objectives |
|---|---|
| Topic 1: Verbal Skills | - Language Usage
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| Topic 2: Mathematics | - Word Problems
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| Topic 3: Science | - Biology
|
The NLN NEX certification exam is an industrial-recognized Nursing Entrance Exam (Math, Science and Verbal) (NEX) certificate that is designed to validate candidates' skills, experience, and knowledge quickly. The Nursing Entrance Exam (Math, Science and Verbal) (NEX) certification exam has been inspiring NLN professionals since its beginning. Now this NEX certification exam has become solid proof of certain skills set and knowledge.
NEW QUESTION # 117
Word Knowledge
The word"precaution"most nearly means:
Answer: A
Explanation:
A precaution is an action taken to prevent harm or reduce risk. Option C best matches this meaning. NEX questions frequently use safety-related vocabulary.
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NEW QUESTION # 118
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 # 119
A doctor lowered a patient's dosage from 50 mg to 40 mg. What percent decrease was this?
Answer: B
Explanation:
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.
NEW QUESTION # 120
Which of the following bones form the ball-and-socket joint of the upper extremity?
Answer: A
Explanation:
The ball-and-socket joint of the upper extremity is the shoulder joint. This joint is formed by the head of the humerus (the ball) fitting into the glenoid cavity of the scapula (the socket). This structure allows for a wide range of motion, including flexion, extension, abduction, adduction, and rotation. The ribs do not participate in this joint, and the clavicle connects the scapula to the sternum but does not form the ball-and-socket articulation. Understanding joint structure and function is important for anatomy questions on the NEX Science exam. The shoulder joint's design allows greater mobility than stability, which explains why shoulder dislocations are relatively common.
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NEW QUESTION # 121
Which of the following routes of transmission is most responsible for the spread of hepatitis C from one individual to another?
Answer: D
Explanation:
Hepatitis C is a bloodborne virus that is most commonly transmitted through direct blood-to-blood contact.
Sharing needles allows contaminated blood to enter another person's bloodstream, making it the primary mode of transmission. Hepatitis C is not spread through casual contact such as touching skin, coughing, or sharing drinks. Understanding transmission routes is essential for infection prevention and public health, and the NEX Science exam frequently emphasizes distinguishing between airborne, contact, and bloodborne diseases. Because hepatitis C spreads primarily through shared needles, option D is correct.
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NEW QUESTION # 122
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