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Question #46371
The Question
A 55-year-old patient presents with acute angina. Their electrocardiogram (ECG) reveals a distinct depression in the ST-segment. The physician prescribes a bioactive molecule extracted from the yeast Monascus purpureus. Which of the following statements correctly correlates the patient's cardiac physiology with the mechanism and limitation of the prescribed medication?
Options
- A.
The ST-segment depression indicates impaired ventricular repolarization due to ischemia; the medication lowers blood cholesterol via competitive inhibition but cannot reverse the acute fibrotic damage or electrical conduction failure.
- B.
The ST-segment depression indicates acute myocardial ischemia; the prescribed agent will immediately dissolve the atheromatous plaque and restore normal ventricular repolarization.
- C.
The ST-segment depression signifies a delay in AV node conduction; the medication acts as a clot-buster to restore coronary perfusion and normalize the ECG.
- D.
The ST-segment depression reflects subendocardial ischemia; the prescribed agent lowers cholesterol by non-competitively inhibiting the target enzyme, thereby regenerating the infarcted tissue.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Coronary Circulation Specifics|Statin Mechanism of Action|ECG Wave Interpretation
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: This question tests the synthesis of two distinct NCERT chapters (Body Fluids & Circulation + Microbes in Human Welfare).
The trap relies on students conflating the long-term biochemical prevention role of statins (competitive inhibition of cholesterol synthesis) with the acute therapeutic reversal of structural/electrical heart damage.
It also tests precise terminology: Statins are 'competitive' inhibitors, and the ST-segment relates to ventricular repolarization, not AV node conduction.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Body Fluids and Circulation - Class 11 |
| Concept | ECG Wave Interpretation |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |