HESI RN
Biology Practice Test
1. Asexual reproduction is a type of reproduction by which offspring arise from:
- A. Two identical cells
- B. A single cell
- C. Two cells
- D. Four daughter cells
Correct answer: B
Rationale: Asexual reproduction is a type of reproduction where a single parent cell divides to produce genetically identical offspring. The correct answer is 'B: A single cell' because asexual reproduction does not involve the fusion of two cells. Choice A ('Two identical cells') is incorrect because asexual reproduction does not involve two cells. Choice C ('Two cells') is incorrect because asexual reproduction typically involves only one parent cell. Choice D ('Four daughter cells') is incorrect because asexual reproduction does not necessarily involve the production of four daughter cells.
2. Which of these findings would the nurse most closely associate with anemia in a 10-month-old infant?
- A. Hemoglobin level of 12 g/dL
- B. Pale mucosa of the eyelids and lips
- C. Hypoactivity
- D. A heart rate between 140 to 160
Correct answer: B
Rationale: The correct answer is B. Pale mucosa of the eyelids and lips is a classic sign of anemia in infants, indicating a lack of sufficient red blood cells. This finding is due to decreased hemoglobin levels, which causes reduced oxygen delivery to tissues. Choices A, C, and D are less specific to anemia in infants. While a hemoglobin level of 12 g/dL may be within the normal range for a 10-month-old infant, the presence of pale mucosa is a more indicative sign of anemia.
3. What must first occur before a cell can be divided to grow, develop, and reproduce organisms?
- A. RNA replication
- B. DNA replication
- C. Gene replication
- D. Chromosome replication
Correct answer: B
Rationale: The correct answer is B: DNA replication. Before a cell can divide to grow, develop, and reproduce organisms, DNA replication must occur. This process ensures that each daughter cell receives an identical set of genetic information. Choices A, C, and D are incorrect because while RNA, genes, and chromosomes are essential components of cell division, DNA replication is the specific process that must first occur to ensure accurate transmission of genetic material.
4. The psychiatric nurse is caring for clients in an adolescent unit. Which client requires the nurse's immediate attention?
- A. A 17-year-old client with schizophrenia who is pacing the hallways
- B. An 18-year-old client with antisocial behavior who is being yelled at by other clients
- C. A 16-year-old client with depression who refuses to eat meals
- D. A 15-year-old client with anxiety who is quietly reading in a corner
Correct answer: B
Rationale: The client with antisocial behavior being yelled at by peers may escalate the situation, potentially leading to violence or self-harm. Addressing the situation quickly helps prevent harm and de-escalates the conflict. Choices A, C, and D do not present immediate risks that require urgent intervention compared to the potential danger of a conflict escalating to violence with the client exhibiting antisocial behavior.
5. The client is NPO and is receiving total parenteral nutrition (TPN) via a subclavian line. Which precautions should the nurse implement? Select one that does not apply.
- A. Place the solution on an IV pump at the prescribed rate.
- B. Monitor blood glucose every twelve (12) hours.
- C. Weigh the client weekly, first thing in the morning.
- D. Change the IV tubing every three (3) days.
Correct answer: D
Rationale: Precautions for clients receiving TPN include placing the solution on an IV pump to control the rate, monitoring blood glucose levels to detect hyperglycemia, and monitoring intake and output to assess fluid balance. Changing the IV tubing every three days is not a standard precaution for clients receiving TPN via a subclavian line.