Enzyme drug used for acute leukemia treatment:

Correct Answer: B

Rationale: The correct answer is B: Asparaginase. Asparaginase is used in acute leukemia treatment to deplete asparagine, an essential amino acid for cancer cell growth. This enzyme helps inhibit protein synthesis in leukemia cells, leading to cell death. Dihydrofolate reductase (A) is targeted by methotrexate, not commonly used in leukemia. Aromatase (C) inhibitors are used in breast cancer, not leukemia. DNA gyrase (D) is a bacterial enzyme targeted by antibiotics, not used in leukemia treatment. In conclusion, B is the correct choice for acute leukemia treatment.

Correct Answer: C

Rationale: The correct answer is C: Adenosine. Adenosine is commonly used for cardioversion of supraventricular tachycardias like atrial flutter. It works by blocking the AV node transiently, allowing the sinus node to regain control of the heart rhythm. Mexiletine (A) and Lidocaine (B) are primarily used for ventricular arrhythmias, not atrial flutter. Amiodarone (D) is often used for atrial fibrillation, not specifically atrial flutter.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.