HESI RN
Biology Practice Test
1. Which of the following do prokaryotic cells lack?
- A. A cell membrane
- B. Genetic material
- C. Cytoplasm
- D. Membrane-bound organelles
Correct answer: D
Rationale: The correct answer is D: Prokaryotic cells lack membrane-bound organelles, such as mitochondria or a nucleus, distinguishing them from eukaryotic cells. Prokaryotic cells do have genetic material, a cell membrane, and cytoplasm. Choice A is incorrect because prokaryotic cells do have a cell membrane, which is essential for maintaining cell structure and regulating what enters and exits the cell. Choice B is incorrect because prokaryotic cells contain genetic material, typically in the form of a single circular chromosome. Choice C is incorrect because prokaryotic cells have cytoplasm, where various cellular activities take place.
2. A client is being taught about the use of enoxaparin (Lovenox) for the prevention of deep vein thrombosis. Which instruction should the nurse include in the teaching plan?
- A. Inject the medication subcutaneously.
- B. Avoid massaging the injection site after administration.
- C. Administer the medication at the same time each day.
- D. Do not expel the air bubble from the syringe before injection.
Correct answer: C
Rationale: Enoxaparin (Lovenox) is administered subcutaneously at the same time each day to maintain consistent blood levels. Injecting the medication into the muscle is incorrect, as it should be given subcutaneously. Massaging the injection site should be avoided to prevent bruising. The air bubble in the prefilled syringe should not be expelled, as it ensures the full dose is administered.
3. The nurse is caring for a 17-year-old male who fell 20 feet 5 months ago while climbing the side of a cliff and has been in a sustained vegetative state since the accident. Which intervention should the nurse implement?
- A. Talk directly to the adolescent while providing care
- B. Maintain silence during care to avoid overstimulation
- C. Play soothing music in the background
- D. Limit visitors to immediate family only
Correct answer: A
Rationale: Talking directly to the adolescent is the most appropriate intervention in this scenario. It helps maintain a sense of connection and respect, even if the response is not evident. Maintaining silence may lead to isolation and hinder any potential communication attempts. Playing soothing music may not provide the personal interaction needed for connection. Limiting visitors to immediate family only may deprive the patient of diverse interactions that could be beneficial for their emotional well-being.
4. The nurse is caring for a patient who is taking trimethoprim-sulfamethoxazole (TMP-SMX). The nurse learns that the patient takes an angiotensin-converting enzyme (ACE) inhibitor. To monitor for drug interactions, the nurse will request an order for which laboratory test(s)?
- A. A complete blood count
- B. BUN and creatinine
- C. Electrolytes
- D. Glucose
Correct answer: C
Rationale: The correct answer is 'C. Electrolytes.' When trimethoprim-sulfamethoxazole (TMP-SMX) is taken with an ACE inhibitor, there is an increased risk of hyperkalemia due to the combined effects on potassium levels. Monitoring electrolytes, specifically potassium, is essential to detect and manage this potential drug interaction. Choices A, B, and D are incorrect because while they are important tests in general patient care, they are not specifically indicated to monitor for the drug interaction between TMP-SMX and ACE inhibitors.
5. A 24-year-old female client who has a history of rheumatoid arthritis (RA) is taking ibuprofen (Motrin) for pain relief. Which information should the nurse provide the client about taking this medication?
- A. Take the medication with meals
- B. Take the medication with an antacid
- C. Report any changes in stool color to your healthcare provider
- D. Avoid taking aspirin while using this medication
Correct answer: C
Rationale: The correct answer is to instruct the client to report any changes in stool color to the healthcare provider. This is important because changes in stool color can indicate gastrointestinal bleeding, a serious side effect of nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen. Choice A is incorrect because while taking ibuprofen with meals can help reduce stomach upset, it is not the most crucial information to provide. Choice B is incorrect as taking ibuprofen with an antacid is not a standard recommendation. Choice D is also incorrect because while ibuprofen and aspirin are both NSAIDs, they can be taken together under certain circumstances, but it's important to be cautious and follow healthcare provider recommendations.