A. What are the functions of 1 saliva
2 HCL in stomach 3 bile juice 4 villi
B. Write one function each, of the following enzymes 1 Pepsin 2 Lipase
Answers
Answer:
A. 1) The digestive functions of saliva include moistening food, and helping to create a food bolus, so it can be swallowed easily.
2)HCL in stomach provides acidic medium to PEPSIN for its better work, and also help in digestion of food.
B. 1)pepsin break down protein into smaller amino acid.
2)Lipase is an enzyme that breaks down dietary fats into smaller molecules called fatty acids and glycerol.
Explanation:
Explanation:
1) Saliva contains enzymes like salivary amylase that helps in the breakdown of starch in the mouth. It also contains lysozyme which kills the bacteria that may be present in the food, and makes the food into a wet mass called bolus.
2) The HCl is released from the walls of the stomach, it helps in making the medium acidic so that the enzyme pepsin could act on the food, and the breakdown of proteins could be started.
3) Bile juice is released from the liver and temporarily stored in the gallbladder, it helps in the breakdown of fats, and the process is called as emulsification.
4) Villi: They are the small finger like projections found in the walls of the small intestine which functions in the absorption of digested food.
B 1) Pepsin : pepsin is the main digestive enzyme released from the stomach.
It is released in the inactive form of pepsinogen which later is converted into active pepsin.
It helps in the breakdown of proteins into smaller molecules of polypeptides in the stomach.
2) Trypsin : It is released from the pancreas, and it is the main pancreatic juice or enzymes.
It is released in the form of trypsinogen which later is converted into active trypsin.
It also helps in the breakdown of proteins into smaller polypeptides, but it performs its functions in the small intestine.