HESI RN
Biology Test
1. Which of the following is the process that reduces cells originally classified as diploid to haploid?
- A. Meiosis
- B. Photosynthesis
- C. Mitosis
- D. Cytokinesis
Correct answer: A
Rationale: The correct answer is A, Meiosis. Meiosis is the cell division process that reduces the chromosome number from diploid to haploid, which is essential for sexual reproduction. Choice B, Photosynthesis, is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll. Choice C, Mitosis, is a cell division process that results in two diploid daughter cells with the same number of chromosomes as the parent cell. Choice D, Cytokinesis, is the division of the cytoplasm following cell division.
2. A community health nurse is conducting a neighborhood discussion group about disaster planning. What information regarding transmission of anthrax should the nurse provide to the group?
- A. Infection is acquired when anthrax spores enter a host.
- B. Mature anthrax bacteria live dormant on inanimate objects.
- C. Spores cannot survive for extended periods outside a living host.
- D. Anthrax is transmitted by respiratory droplets from person to person.
Correct answer: A
Rationale: The correct answer is A: Infection is acquired when anthrax spores enter a host. Anthrax is primarily transmitted through spores entering the body, either through the skin, inhalation, or ingestion. Person-to-person transmission of anthrax is extremely rare and not a significant mode of transmission. Choices B and C are incorrect because mature anthrax bacteria do not live dormant on inanimate objects, and spores can survive for extended periods outside a living host. Choice D is incorrect as anthrax is not transmitted by respiratory droplets from person to person.
3. A female client with ovarian cancer is receiving chemotherapy. Which laboratory result should the nurse report to the healthcare provider immediately?
- A. White blood cell count of 2,000/mm³
- B. Platelet count of 100,000/mm³
- C. Hemoglobin level of 10 g/dL
- D. Serum creatinine level of 1.5 mg/dL
Correct answer: A
Rationale: A white blood cell count of 2,000/mm³ is critically low and places the client at high risk for infection, requiring immediate intervention. Neutropenia, a low white blood cell count, is a common side effect of chemotherapy. A decreased white blood cell count compromises the immune system's ability to fight infections, making it a priority to address to prevent serious complications. Platelet count of 100,000/mm³ is relatively low but not as urgent as a severely low white blood cell count. Hemoglobin level of 10 g/dL is within the normal range for females and does not require immediate intervention. Serum creatinine level of 1.5 mg/dL is also within the normal range and does not pose an immediate threat to the client's health.
4. An unlicensed assistive personnel (UAP) reports to the charge nurse that a client who delivered a 7-pound infant 12 hours ago is reporting a severe headache. The client’s blood pressure is 110/70 mmHg, respiratory rate is 18 breaths/min, heart rate is 74 beats/min, and temperature is 98.6°F (37°C). What action should the charge nurse implement first?
- A. Notify the healthcare provider of the assessment findings.
- B. Administer analgesics as prescribed.
- C. Increase the client’s fluid intake.
- D. Monitor the client’s vital signs every hour.
Correct answer: A
Rationale: A severe headache post-delivery could indicate a serious condition such as preeclampsia or a spinal headache, which requires immediate medical attention. Notifying the healthcare provider of the assessment findings allows for prompt evaluation and appropriate management of the client's condition.
5. The healthcare provider notes on the fetal monitor that a laboring client has a variable deceleration. Which action should the healthcare provider implement first?
- A. Assess cervical dilation.
- B. Change the client's position.
- C. Administer oxygen via facemask.
- D. Turn off the oxytocin infusion.
Correct answer: B
Rationale: Changing the client's position is the priority intervention for variable decelerations as it can relieve pressure on the umbilical cord, potentially resolving the deceleration and improving fetal oxygenation. Assessing cervical dilation, administering oxygen via facemask, and turning off the oxytocin infusion are important interventions but addressing the fetal distress caused by variable decelerations takes precedence.