Q. 785.0( 3 Votes )

Consider the following chemical reactions which take place in different organisms/tissues under various conditions:

(i) Glucose Ethanol + Carbon dioxide + Energy

(ii) Glucose Carbon dioxide + Water + Energy

(iii) Glucose Lactic acid + Energy

(a) Name one organism which respires according to equation (i) above.

(b) Name one organism which respires according to equation (ii) above.

(c) When and where does respiration represented by equation (iii) above take place?

(d) Which equation/equations represent aerobic respiration ?

(e) Which equation/equations represent anaerobic respiration ?

(f) Which of the above reactions produces the maximum amount of energy ?

Answer :

(a) Yeast.

(b) Human beings


(c) Such kind of respiration occurs in animal’s muscles, when the animal needs more energy for doing heavy physical exercises.


(d) Chemical reaction (ii) represents the aerobic respiration.


(e) Chemical reactions (i) and (iii) represent the anaerobic respiration.


(f) Chemical reaction (ii) represents the aerobic respiration. In aerobic respiration, maximum amount of energy is produced.


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