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  •  Breathing in animals refers to   Option: 1 Exchange of  <img alt="

 Breathing in animals refers to 

 

Option: 1

Exchange of  O_{2}  from the atmosphere with  CO_{2}  produced by the cells 

 


Option: 2

Exchange of CO_{2}  from the atmosphere with O_{2} produced by the cells

 


Option: 3

An anabolic process by which animal cells utilise oxygen, produce carbon dioxide and convert the released energy into ATP

 


Option: 4

None of these 

 


Answers (1)

best_answer

Breathing and Cellular Respiration -

 
  • Oxygen (O_{_{2}}) is utilised by the organisms to indirectly break down simple molecules like glucose, amino acids, fatty acids, etc. to derive energy to perform various activities.
  • Carbon dioxide (CO_{_{2}}) which is harmful is also released during the above catabolic reactions.
  • It is, therefore, evident that O_{_{2}} has to be continuously provided to the cells and CO_{_{2}} produced by the cells have to be released. 
  • This process of exchange of O_{_{2}} from the atmosphere with CO_{_{2}} produced by the cells is called breathing, commonly known as respiration.

Hence, the correct option is a. The process of exchange of O_{2}  from the atmosphere with CO_{2}  produced by the cells is called breathing. 

Posted by

Divya Prakash Singh

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