Question

List the chemical changes that a starch molecule undergoes from the time it reaches the duodenum to the time its carbon atoms become part of carbon dioxide molecules. Say where in the body these changes occur.

Answer 1

first a little amount of starch is converted into MALTOSE in mouth due to the presence of salivary amylase.Later it goes to the small intestine through oesophagus and stomach but without any dig still of starch.
In small intestine starch is converted into MALTOSE in the presence of PANCREATIC AMYLASE which convert the rest protein into MALTOSE.
MALTOSE then later converted into glucose in the presence of maltase another enzyme secreted by small intestine.
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Answer 2

List the chemical changes that a starch molecule undergoes from the time it reaches the duodenum to the time its carbon atoms become part of carbon dioxide molecules. Say where in the body these changes occurred