Before You Begin
Question #46305
The Question
A healthy individual relocates to an altitude of 4,500 meters. After several months, physiological acclimatization is achieved. Which of the following statements regarding this acclimatization process is INCORRECT?
Options
- A.
The primary stimulus for this adaptation is the reduced partial pressure of oxygen in the atmosphere, leading to arterial hypoxia.
- B.
Hypoxia stimulates the juxtaglomerular cells of the kidney to secrete erythropoietin, which accelerates red blood cell production.
- C.
The compensatory polycythemia enhances the oxygen-carrying capacity of blood while simultaneously decreasing peripheral vascular resistance.
- D.
The body compensates by increasing the breathing rate and decreasing the binding affinity of hemoglobin for oxygen.
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
Erythropoietin Function|Partial Pressure Gradient Logic|Renal O2 sensors
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often assume physiological adaptations are universally beneficial without trade-offs.
While polycythemia solves the oxygen-carrying deficit, students fail to integrate circulatory fluid dynamics (Class XI Body Fluids), missing that increased hematocrit inevitably raises blood viscosity and peripheral resistance.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Breathing and Exchange of Gases - Class 11 |
| Concept | Partial Pressure Gradient Logic |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |