Question

The transfer of \(O_2\) from outside environment to cells and removal of \(CO_2\) is referred to as

• A. Exhalation
• B. Respiration
• C. Inhalation
• D. None of these

Hint:

Remember that "breathing" is just the physical act of moving air in and out of the lungs. "Respiration" encompasses the entire gas exchange process, from the environment to the individual cells.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The question describes the overall process of gas exchange between an organism and its environment.

Step 2: Detailed Explanation:
\[\begin{array}{rl} \bullet & \text{Inhalation: The act of breathing in, taking air (and oxygen) into the lungs. } \\ \bullet & \text{Exhalation: The act of breathing out, expelling air (with carbon dioxide) from the lungs. } \\ \bullet & \text{Breathing: The mechanical process of inhalation and exhalation. } \\ \bullet & \text{Respiration: This is a broader term. It includes breathing (external respiration) as well as the process at the cellular level (cellular respiration) where cells use oxygen to break down glucose and produce energy, releasing carbon dioxide as a waste product. The question describes the entire process of getting \(O_2\) to the cells and removing \(CO_2\), which is best defined as respiration. } \\ \end{array}\]

Step 3: Final Answer:
The complete process of transferring oxygen to cells and removing carbon dioxide is called respiration.