HESI RN
Biology Practice Test
1. Which of the following is not one of the four nitrogenous bases that make up the DNA structure?
- A. Adenine
- B. Guanine
- C. Uracil
- D. Thymine
Correct answer: C
Rationale: The correct answer is C: Uracil. Uracil is found in RNA, not DNA. The four nitrogenous bases in DNA are adenine, thymine, cytosine, and guanine. Choice A, Adenine, is a nitrogenous base in DNA. Choice B, Guanine, is another nitrogenous base in DNA. Choice D, Thymine, is also one of the four nitrogenous bases in DNA. Therefore, the correct answer is Uracil (Choice C).
2. A nurse is planning a community health fair to promote cardiovascular health. Which activity should be included to best engage participants?
- A. free blood pressure screenings
- B. lectures on heart-healthy diets
- C. distribution of pamphlets on heart disease
- D. cooking demonstrations of healthy recipes
Correct answer: A
Rationale: Offering free blood pressure screenings should be included in the community health fair to best engage participants. This activity provides immediate, valuable information about participants' cardiovascular health. Blood pressure screenings are interactive, engaging, and offer personalized insights that can motivate individuals to take action towards improving their heart health. Lectures on heart-healthy diets, distribution of pamphlets, and cooking demonstrations, although beneficial, may not have the same level of immediate impact and engagement as the hands-on experience of getting one's blood pressure checked.
3. A client with renal calculi is being assessed by a nurse. Which question should the nurse ask?
- A. Is there a family history of this problem?
- B. Do you consume cranberry juice?
- C. Do you urinate after sexual intercourse?
- D. Do you have burning sensation during urination?
Correct answer: A
Rationale: When assessing a client with renal calculi, it is important for the nurse to inquire about a family history of the problem. There is a genetic predisposition associated with renal stone formation, making it essential to assess if other family members have experienced renal stones. Choices B, C, and D are not directly related to renal calculi. Consuming cranberry juice is more relevant to urinary tract health, urinating after sexual intercourse is related to preventing urinary tract infections, and experiencing a burning sensation during urination is a symptom commonly associated with urinary tract infections, not renal calculi.
4. The healthcare provider is assessing a client who is receiving total parenteral nutrition (TPN). Which finding requires immediate intervention?
- A. Blood glucose level of 150 mg/dL.
- B. Weight gain of 2 pounds in 24 hours.
- C. Decreased urine output.
- D. Temperature of 100.3°F (37.9°C).
Correct answer: C
Rationale: Decreased urine output in a client receiving total parenteral nutrition (TPN) requires immediate intervention because it can indicate potential complications such as fluid overload or kidney dysfunction. Monitoring urine output is crucial in assessing renal function and fluid balance in patients on TPN. A blood glucose level of 150 mg/dL is within a normal range and may not require immediate intervention. Weight gain of 2 pounds in 24 hours could be a concern but may not be as urgent as addressing decreased urine output. A temperature of 100.3°F (37.9°C) is slightly elevated but may not be directly related to TPN administration unless there are other symptoms of infection present.
5. A child has a nosebleed (epistaxis) while playing soccer. In what position should the nurse place the child?
- A. Position the child lying flat and apply pressure to the bridge of the nose.
- B. Position the child sitting up and leaning forward.
- C. Have the child tilt the head back and pinch the nose.
- D. Position the child lying on their side and apply ice to the nose.
Correct answer: B
Rationale: The correct answer is to position the child sitting up and leaning forward. This position helps prevent blood from flowing down the throat, reducing the risk of choking or vomiting. Choice A is incorrect because lying flat can cause blood to flow down the throat. Choice C is wrong as tilting the head back may lead to blood entering the throat. Choice D is also incorrect as applying ice is not recommended for nosebleeds and lying on the side may not prevent blood from flowing down the throat.