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

Which of the following are correct ?

(a) The complete oxidation of food yielding carbon dioxide, water and energy in the presence of oxygen is called aerobic respiration.

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

(c)  The number of molecules of ATP formed by each glucose molecule during aerobic respiration is 38.

Right Option : D
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Question : 2

Which of the following are correct ?

(a) The word aerobic means in presence of oxygen.

(b) These food molecules are then broken down into carbon dioxide and water to release energy.

Right Option : C
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Question : 3

Aerobic respiration occurs in the presence of  ____________ .

Right Option : C
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