1. Dr. Calede is eating tater tots sprinkled with bacon bits ufe is Note the fol
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Question
1. Dr. Calede is eating tater tots sprinkled with bacon bits ufe is Note the following information: There are 160 calories in a 9 pieces serving of Ore-ida Tater Tots. Calorie breakdown 45% fat, 50% carbs, 5% protein Fried bacon contains 2.96 grams of protein and 3.34 grams of fat. e is wondering what enzymes and organs are at play in the digestion of this meal. Draw a single schematic on the next pages (make it big) addressing all of the points below a. All organs involved in this digestion process and their relationships with one another The different steps in the digestion of each element of this meal including mechanical breakdown and chemical digestion. Make sure to indicate where absorption takes place. b. All enzymes that play a role in the breakdown of this meal as well as the organs that secrete them and the location of the chemical breakdown. Include the name of the cells c. of the stomach and pancreas that play a role in the digestion of this meal. d. Any and all intermediate products from the chemical breakdown of the foods.Explanation / Answer
Ans. 1
a. As the food is tater tots with bacon. This food consists of Carbohydrates, fats and proteins. Food breakdown starts in mouth because of mechanical digestion caused by teeth. From mouth food enters stomach via oesophagus where the food gets churned with stomach acids and gets converted into chyme. Then this food(chyme) enters small intestine where further digestion takes place.
Carbohydrates digestion starts in mouth and continues in small intestine.
Fat emulsification starts in mouth but digestion is done in small intestine.
Protein digestion is done in stomach and small intestine.
Liver produces bile, which help in digestion of fats.
Pancreas produces pancreatic juice which neutralizes the acidic pH of food(chyme) which comes from stomach. It also helps in digestion of proteins.
Hence, the organs involved in digestion are, MOUTH, STOMACH, SMALL INTESTINE, LIVER & PANCREAS.
b. In mouth with the help of teeth the food gets grinded and breaks down into small pieces.
Carbohydrates contain starch, sugar and fibre. The digestion of carbohydrate starts in mouth. Starch digestion in mouth is done by amylase fiund in saliva. Sugar digestion in mouth starts in presence of enzyme sucrase, maltase and lactase. Carbohydrates further digestion takes place in small intestine in presence of pancreatic amylase.
Fats emulsification starts in mouth but it gets digested in small intestine under the influence of bile and pancreatic lipase.
Protein digestion takes place in stomach and small intestine. In Stomach in presence of HCl and pepsin digestion of protein takes place. In small intestine protein digestion takes place in presence of trypsin, chymoyrypsin, carboxypeptidase.
Absorption takes place at small intestine.
c.
d. Carbohydrates are absorbed in the form of monosaccharides. Carbohydrates are polysaccharides, oligosaccharides, disaccharides, they all must be broken down into monosaccharides(glucose, galactose, fructose, sorbitol) before absorption. Disaccharide like sucrose is broken down into glucose and fructose, lactose is broken down into galactose and glucose, maltose is broken down into two molecules of glucose.
Starch, dextrin and glycogen are digestible polysaccharides. Starch is broken down into amylose and amylopectin. Amylose is then broken down into straight chain glucose and amylopectin is broken down into branched chain glucose. Dextrin is intermediate product of starch digestion.
Proteins are polypeptides which are digested into amino acids before absorption.
Fats are broken down into fatty acids and glycerol before absorption.
Food Enzyme organ(site of digestion) Carbohydrates: Starch Amylase Mouth Pancteatic amylase Small intestine, Pancreatic amylase is secreted from acinar cells of pancreas. Sugar lactase, maltase, sucrase Mouth, Small Intestine Amylase Mouth Proteins: HCl Stomach, secreted by Parietal cells Pepsin Stomach, secreted by Chief cells Trypsin Small intestine, secreted from pancreas. Chymotrypsin Small intestine, secreted from pancreas. Fats: Bile Small intestine, it is secreted by liver and is stored in gall bladder, it comes to small intestine by bile duct. Pancreatic lipase Small intestine, secreted from acinar cells of pancreas.Related Questions
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