Aerobic Respiration


 
 
Concept Explanation
 

Aerobic Respiration

Aerobic respiration: The complete oxidation of food yielding carbon dioxide, water and energy in the presence of oxygen is called aerobic respiration. This respiration starts in the cytoplasm (glycolysis) and continues in the mitochondria (Kreb's cycle) of the cell. The products of this reaction include: ATP, carbon dioxide and water.

The number of molecules of ATP formed by each glucose molecule during aerobic respiration is 38. Hence, the energy made available is much greater than in the case of anaerobic respiration.

In the process, energy is produced. This energy is used to drive cellular processes that are endothermic (processes that absorb energy). steps take place during aerobic respiration are:

In Cytoplasm (Glycolysis)

                                 Glucose:(6;Carbon)xrightarrow[In;Cytoplasm]{Glycolysis}Pyruvic ;Acid; (3;Carbon)

In Mitochondria (Kreb cycle )

                               Pyruvic: Acidxrightarrow[In;mitochondria;presence;of;oxygen]{Krebs;Cycle} CO_2+H_2O+38ATP

 

                        

 

Sample Questions
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Question : 1

The process of breakdown of food in the cell with the release of energy is called  ________________ .

Right Option : A
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Question : 2

This respiration starts in the cytoplasm and continues in the _______________of the cell. 

Right Option : C
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Question : 3

Which of the following are correct ?

(a) In aerobic respiration, the food molecules are combined with oxygen and get oxidised outside cell.

(b) aerobic respiration starts in the cytoplasm (glycolysis) and continues in the mitochondria (Krebs's cycle)   of the cell.

Right Option : B
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