HESI RN
Biology Practice Test
1. Which of the following terms is used to represent two alleles that are the same type?
- A. Homosynchronous
- B. Hypersynchronous
- C. Heterozygous
- D. Homozygous
Correct answer: D
Rationale: The correct answer is D, 'Homozygous.' Homozygous refers to having two identical alleles for a particular gene. In this context, 'Homosynchronous' (choice A) is not a recognized genetic term. 'Hypersynchronous' (choice B) is not a term used in genetics. 'Heterozygous' (choice C) refers to having two different alleles for a particular gene, which is the opposite of homozygous.
2. A client with a recent diagnosis of bipolar disorder is attending a support group for the first time. Which statement made by the client indicates a need for further education about the disorder?
- A. “I will make sure to take my medications every day.”
- B. “I will avoid high-stress situations whenever possible.”
- C. “I know I can stop my medications when I am feeling better.”
- D. “I should monitor my mood changes closely.”
Correct answer: C
Rationale: The correct answer is C because it shows a misconception about bipolar disorder treatment. Stopping medications when feeling better can lead to a relapse or worsening of symptoms. Choice A is correct because medication adherence is crucial in managing bipolar disorder. Choice B is also a good strategy as stress management is important in symptom control. Choice D is a proactive approach to self-awareness and can help in recognizing early signs of mood changes.
3. A client with pneumonia is receiving antibiotics and oxygen therapy. What assessment finding requires immediate intervention?
- A. Productive cough with yellow sputum.
- B. Oxygen saturation of 88%.
- C. Respiratory rate of 20 breaths per minute.
- D. Heart rate of 90 beats per minute.
Correct answer: B
Rationale: An oxygen saturation of 88% indicates hypoxemia, which is a critical condition requiring immediate intervention to improve oxygenation. Hypoxemia can lead to tissue hypoxia and further complications. A productive cough with yellow sputum is common in pneumonia but may not require immediate intervention unless it worsens or is associated with other concerning symptoms. A respiratory rate of 20 breaths per minute is within the normal range, indicating adequate ventilation. A heart rate of 90 beats per minute is also within a normal range and may not require immediate intervention unless it is accompanied by other abnormal findings.
4. Prior to implementing a community health program targeting teenage smoking, which information is most important for the nurse to obtain?
- A. greater access to any healthcare provider
- B. allowance for early discharge
- C. Prevalence and patterns of smoking among teenagers
- D. approval by the network healthcare provider
Correct answer: C
Rationale: The most important information for the nurse to obtain before implementing a community health program targeting teenage smoking is the prevalence and patterns of smoking among teenagers. Understanding this data is crucial to tailor the program to the specific needs and behaviors of the target group, ensuring it addresses the root causes effectively. Choices A, B, and D are unrelated to the specific needs of the target group and do not provide essential information for designing an effective smoking cessation program for teenagers.
5. A nurse is caring for four clients. The nurse should observe which of the following clients for a risk of vitamin B6 deficiency?
- A. A client who has cystic fibrosis
- B. A client who has chronic alcohol use disorder
- C. A client who takes phenytoin for a seizure disorder
- D. A client who is prescribed rifampin for tuberculosis
Correct answer: B
Rationale: Chronic alcohol use disorder can lead to vitamin B6 deficiency due to impaired absorption and increased excretion of the vitamin. While clients with cystic fibrosis may be at risk for fat-soluble vitamin deficiencies, such as vitamins A, D, E, and K, they are not specifically at high risk for vitamin B6 deficiency. Clients taking phenytoin are at risk for folate deficiency, not vitamin B6. Clients prescribed rifampin for tuberculosis are at risk for vitamin D deficiency, not vitamin B6.