Respiration, Part-2, std-10

2.Anaerobic Respiration:-

 → The respiration which takes place without O2 is called anaerobic respiration.

 → It takes place in cytoplasm of the cell.

 ➤ Reaction :-

  (i) STEP -1 :-  By the process of glycolysis glucose forms pyruvate.

                    C6H12O6 ➞ CH3COCOOH 

(ii) STEP - 2 :-  Formation of ehanol as a end product ,in cytoplasm.

                  CH3COCOOH➞ 2C2H5OH + 2CO2 + 2 ATP ⇈

OR, sometimes it forms Lactic acid.

                  C6H12O6➞ CH3COCOOH ➞ 2CH3CHOHCOOH + 2 ATP`

NOTE:-1 Anaerobic respiration in Yeast during fermentation.

   (i) CH3COCOOH ➞ 2C2H5OH + 2CO2 +2 ATP

 2. Anaerobic respiration occurs sometimes in human muscles during vigorous physical

    exercise. (word flow reaction ) ↓ 

        Glucose ⟶ 2-Pyruvic acid ⟶ 2-Lactic acid + 2 ATP.n

                                Respiration in Plants

:- Respiration in plants occurs through their different parts. 

    like, 

       (i) Through Roots - By root hairs    1.   

       (ii) Through Stem - By lenticels                      2.    

       (iii) Through Leaves - By stomata.
3.

                                

Respiration in Animals

:- Respiration or gaseous exchange in animals occurs through different parts of their body.

  like,

      (i) Unicellular Organisms ➝ Through cell wall by diffusion.

      (ii) Earthworms ⟶ Through their moist skin.

      (iii) Insects ⟶ Through spiracles and tracheae.

      (iv) Fish  ⟶ Through gills.

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