Aerobic Respiration


 
 
Concept Explanation
 

Aerobic Respiration

Aerobic Respiration: The word aerobic means in presence of oxygen. In aerobic respiration, the food molecules are combined with oxygen and get oxidised inside cell. These food molecules are then broken down into carbon dioxide and water to release energy. All food molecules contain carbon, hydrogen and oxygen atoms. The process of oxidation converts the carbon to carbon dioxide (CO_2)  and the hydrogen to water (H_2O). At the same time, this process sets free energy which the cell can use to drive other reactions. Aerobic respiration can be summed up by the following word equation:

Glucose     large overset{oxygen}{rightarrow}        Carbon dioxide + Water + Energy

Although the energy produced is used for variety of processes, some of it always appears as heat. In ‘warm-blooded’ animals (birds and mammals), some of the heat released is retained to maintain their body temperature. In ‘cold-blooded’ animals (reptiles and fish), the heat may build up for some time and allow the animals to move about faster. In plants, the heat is lost to the surroundings as soon it is produced.

Sample Questions
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Question : 1

In Aerobic respiration the end product of are ___________________________ .

Right Option : C
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Question : 2

Which of the following are correct about aerobic respiration?

(a) The energy produced is used for variety of processes, some of it always appears as heat.

(b) In ‘warm-blooded’ animals (birds and mammals), some of the heat released is retained to maintain their body temperature.

(c) In ‘cold-blooded’ animals (reptiles and fish), the heat may build up for some time and allow the animals to move above faster .

 

Right Option : D
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Question : 3

Aerobic respiration occurs in the presence of  ____________ .

Right Option : C
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Explanation
 
 


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