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  • (a) Write the reaction that occurs when glucose breaks down anaerobically in yeast. (b) Write the mechanism by which fishes breath in water. (c) Name the balloon likes structures present in lungs. List its two functions. (d) Name t

(a) Write the reaction that occurs when glucose breaks down anaerobically in yeast.
(b) Write the mechanism by which fishes breath in water.
(c) Name the balloon likes structures present in lungs. List its two functions.
(d) Name the respiratory pigment and write its role in human beings.

 

 

 

 
 
 
 
 

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(a)    \mathrm{C_6H_{12}O_6\longrightarrow 2C_2H_5OH + 2CO_2}

(b)    Fishes breathe through gills and absorb dissolved oxygen present in water

(c)    Ballon like structures present in the lungs are called Alveoli.

        Functions:-

  • Removal of CO2 from the blood
  • Addition of Oxygen to blood
  • They increase surface area for absorption of gases

(d)    The respiratory pigment is hemoglobin and its main function is to transport oxygen to different parts of the body

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Sumit Saini

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