Question

Due 12 Oct Handout 3-1: Where the Foods Are Broken Down Location & Cracker Molecules/Enzymes (Carbohydrates) Mouth Peanuts (Proteins) Butter (Lipids) Esophagus Stomach Small Intestine Large Intestinal Cells Calones

Answer 1

1. 1. Mouth:The digestion of carbohydrates takes place in the mouth.It is by the action of the enzyme salivary amylase.There is no digestion of lipids and protein in the mouth due to absence of enzymes

2.oesophagus:There is no digestion of any substance because of the absence of enzymes for the digestion. It only promotes in peristalsis of food from mouth to stomach.

3.Stomach:there is no carbohydrates digestion because of the absence of the enzyme.Protein digestion starts in the stomach.the enzyme pepsin converts proteins into proteosus and peptones.Slight carbohydrate digestion also takes place by the enzyme gastric amylase.Lipids are digested by the gastric lipase into fatty acids and glycerol.

4.small intestine: Carbohydrates are digested by the disacharidases into monosaccharides.Proteins, proteosus and peptones are converted into the amino acids by the tripeptidases, dipeptidases.lipids are digested into fatty acids and glycerol by the intestinal lipase.

5.Large intestine: There is no digestion in the large intestine.its main function is to absorb water and solidify the feaces.