According to the provided information, what is the primary challenge faced by air-breathers regarding CO2 excretion? A) The limited surface area available for gas exchange in the r... According to the provided information, what is the primary challenge faced by air-breathers regarding CO2 excretion? A) The limited surface area available for gas exchange in the respiratory system, affecting CO2 removal. B) The rapid conversion of CO2 to carbonic acid in the lungs, hindering direct excretion. C) The high concentration of CO2 in the air, creating a diffusion gradient that is unfavorable for excretion. D) The low concentration of CO2 in the air necessitates a high partial pressure of CO2 for diffusion to occur.
Understand the Problem
The question presents a multiple-choice format focused on the challenges air-breathing organisms face with CO2 excretion, specifically identifying the primary challenge from the provided options.
Answer
The low concentration of CO2 in the air necessitates a high partial pressure of CO2 for diffusion to occur.
The primary challenge faced by air-breathers regarding CO2 excretion is the low concentration of CO2 in the air, necessitating a high partial pressure of CO2 for diffusion to occur.
Answer for screen readers
The primary challenge faced by air-breathers regarding CO2 excretion is the low concentration of CO2 in the air, necessitating a high partial pressure of CO2 for diffusion to occur.
More Information
The low CO2 concentration in the air is a significant challenge because it creates a necessary condition for air-breathing organisms to develop a high partial pressure of CO2 internally to ensure efficient diffusion out of the body.
Tips
A common mistake is assuming that CO2 removal is primarily limited by exchange surface area or conversion to carbonic acid, but the diffusion gradient is a critical factor.
Sources
- Lessons Learned from Natural and Industrial ... - eScholarship - escholarship.org
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