HESI RN
Biology Test
1. The term pleiotropy is best defined as which of the following?
- A. A situation in which one gene remains unexpressed
- B. One gene influencing multiple, seemingly unrelated phenotypic traits
- C. Two genes affected by a single allele
- D. A condition in which multiple genes are missing
Correct answer: B
Rationale: Pleiotropy is best defined as one gene influencing multiple, seemingly unrelated phenotypic traits. This phenomenon showcases the multifunctionality of genes, where a single gene can have effects on various aspects of an organism's phenotype. Choices A, C, and D do not accurately capture the concept of pleiotropy. Option A refers to gene expression, not pleiotropy. Option C describes genetic interactions but not in the context of pleiotropy. Option D talks about missing genes, which is unrelated to the definition of pleiotropy.
2. A client being discharged with a prescription for the bronchodilator theophylline is instructed to take three doses of the medication each day. Since timed-release capsules are not available, which dosing schedule should the nurse advise the client to follow?
- A. 9 a.m., 1 p.m., and 5 p.m.
- B. 8 a.m., 4 p.m., and midnight.
- C. Before breakfast, before lunch, and before dinner.
- D. With breakfast, with lunch, and with dinner.
Correct answer: B
Rationale: Theophylline should be administered on a regular around-the-clock schedule to provide the best bronchodilating effect and reduce the potential for adverse effects. The correct dosing schedule of 8 a.m., 4 p.m., and midnight ensures that the client receives consistent dosing throughout the day. Other options do not provide the necessary around-the-clock coverage. It's important to note that food may affect the absorption of the medication, which is why the dosing schedule should not be tied to meal times.
3. A client with a history of pancreatitis should avoid which of the following food choices?
- A. Noodles
- B. Vegetable soup
- C. Baked fish
- D. Cheddar cheese
Correct answer: D
Rationale: Clients with pancreatitis should avoid high-fat foods like cheddar cheese as they can exacerbate symptoms. Noodles, vegetable soup, and baked fish are generally lower in fat and may be better tolerated by clients with pancreatitis.
4. Nurse Louie is developing a teaching plan for a male client diagnosed with diabetes insipidus. The nurse should include information about which hormone lacking in clients with diabetes insipidus?
- A. Antidiuretic hormone (ADH)
- B. Thyroid-stimulating hormone (TSH)
- C. Follicle-stimulating hormone (FSH)
- D. Luteinizing hormone (LH)
Correct answer: A
Rationale: Diabetes insipidus is a condition characterized by a deficiency of antidiuretic hormone (ADH). ADH plays a crucial role in regulating water balance by controlling the amount of water reabsorbed by the kidneys. Options B, C, and D are incorrect as they are not associated with diabetes insipidus. TSH (thyroid-stimulating hormone) is responsible for regulating thyroid function, while FSH (follicle-stimulating hormone) and LH (luteinizing hormone) are involved in reproductive functions.
5. What does Community Participation in reproductive health mean?
- A. Engaging the community in all stages to ensure acceptability, appropriateness, and sustainability of reproductive health programs.
- B. Providing health services only to women of reproductive age.
- C. Providing reproductive health services without community involvement.
- D. Providing reproductive health services to the entire population without exceptions.
Correct answer: A
Rationale: The correct answer is A: Engaging the community in all stages to ensure acceptability, appropriateness, and sustainability of reproductive health programs. Community participation in reproductive health involves involving the community in planning, implementing, and evaluating programs to ensure they meet the needs and are sustainable. Choice B is incorrect because community participation is not limited to only women of reproductive age but involves the entire community. Choice C is incorrect as it emphasizes providing services without community involvement, which goes against the principles of community participation. Choice D is incorrect because community participation focuses on involving the community rather than providing services to the entire population without exceptions.