HESI RN
Biology Test
1. At the beginning of meiosis, how many chromosomes does the diploid parent cell have?
- A. 23
- B. 24
- C. 46
- D. 54
Correct answer: C
Rationale: The correct answer is C: 46. At the start of meiosis, the diploid parent cell contains 46 chromosomes. During meiosis, the number of chromosomes is halved, resulting in each gamete having 23 chromosomes. Choice A (23) is incorrect because that is the number of chromosomes in a human gamete, not the parent cell. Choice B (24) and Choice D (54) are also incorrect as they do not reflect the correct number of chromosomes in a diploid parent cell at the beginning of meiosis.
2. The nurse is providing dietary instructions to a client with DM. The nurse instructs the client to include which item in the diet?
- A. High-fat foods
- B. Low-carbohydrate foods
- C. High-protein foods
- D. High-fiber foods
Correct answer: D
Rationale: High-fiber foods are beneficial for clients with diabetes because they help regulate blood glucose levels by slowing down the absorption of sugar. Additionally, high-fiber foods aid in maintaining satiety, supporting weight management, and preventing constipation. High-fat foods (choice A) are not recommended for clients with diabetes due to their potential negative impact on heart health and weight. While low-carbohydrate foods (choice B) can be part of a diabetes-friendly diet, high-fiber foods are more specifically beneficial for managing blood sugar levels. High-protein foods (choice C) can be included in moderation in a diabetic diet, but they are not the primary focus when it comes to improving glycemic control.
3. To reduce the risk of pulmonary complications for a client with ALS, which intervention should the nurse implement?
- A. Perform chest physiotherapy
- B. Teach the client breathing exercises
- C. Initiate passive range of motion exercises
- D. Establish a regular bladder routine
Correct answer: A
Rationale: Performing chest physiotherapy is the most appropriate intervention to reduce the risk of pulmonary complications in clients with ALS. Chest physiotherapy helps mobilize and clear respiratory secretions, improving lung function and reducing the risk of complications such as pneumonia. Teaching breathing exercises (Choice B) may be beneficial for some clients, but chest physiotherapy is more specifically targeted at managing pulmonary issues in ALS. Initiating passive range of motion exercises (Choice C) and establishing a regular bladder routine (Choice D) are important interventions in ALS care but are not directly related to reducing the risk of pulmonary complications.
4. A client addicted to heroin and newly pregnant asks a nurse about ensuring her baby's health while on methadone. What should the nurse advise?
- A. Sign up for group therapy sessions.
- B. Discontinue the methadone right away.
- C. Start prenatal care as soon as possible.
- D. Describe genetic testing protocol.
Correct answer: C
Rationale: Initiating prenatal care promptly is essential for monitoring the well-being of both the mother and the fetus, particularly in high-risk pregnancies involving substance use. Early prenatal care allows for timely interventions, education, and support to promote a healthier pregnancy and birth outcomes. Choice A is incorrect because while group therapy may be beneficial, initiating prenatal care is more crucial at this stage. Choice B is incorrect as abrupt discontinuation of methadone can be harmful and should be managed under medical supervision. Choice D is incorrect as genetic testing is not the immediate priority in this scenario.
5. What cell structure is responsible for efficiently packaging DNA into a small volume to fit into the nucleus of a cell and protect the DNA structure and sequence?
- A. Golgi apparatus
- B. Chromatin
- C. Smooth endoplasmic reticulum
- D. Mitochondria
Correct answer: B
Rationale: Chromatin is the correct answer. Chromatin is responsible for packaging DNA into a more compact, dense structure to fit into the nucleus and protect the DNA. The Golgi apparatus is involved in processing and packaging proteins, not DNA. Smooth endoplasmic reticulum is involved in lipid metabolism and detoxification. Mitochondria are known as the powerhouse of the cell responsible for energy production, not DNA packaging.