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  • About 30 % of starch is hydrolysed in   Option: 1 Oesophagus  <b

About 30 % of starch is hydrolysed in 

 

Option: 1

Oesophagus

 


Option: 2

Small intestine

 


Option: 3

Mouth

 


Option: 4

Large intestine

 


Answers (1)

best_answer

 

 

Process of Digestion: In Mouth and Oesophagus -

  • The process of digestion is accomplished by mechanical and chemical processes.
  • The buccal cavity performs the mastication. It is the process of biting and grinding the food with the help of teeth and saliva.
  • Mastication is followed by deglutition. It is the process of swallowing the masticated food (bolus). 
  • The swallowed food is pushed down to the alimentary canal with the help of peristalsis.
  • The gastro-oesophageal sphincter controls the passage of food into the stomach.
  • The saliva secreted into the oral cavity contains electrolytes and enzymes, salivary amylase and lysozyme.
  • The chemical process of digestion is initiated in the oral cavity by the hydrolytic action of the carbohydrate splitting enzyme, the salivary amylase. 
  • About 30 per cent of starch is hydrolysed here by this enzyme (optimum pH 6.8) into a disaccharide – maltose. 
  • Lysozyme present in saliva acts as an antibacterial agent that prevents infections.
     

-

 

 

About 30 percent of starch is hydrolysed here by this enzyme (optimum pH 6.8) into a disaccharide – maltose in mouth. Hence, the correct answer is option c.

Posted by

jitender.kumar

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