Question

State the functions of the following: Bile, HCl, Saliva, Insulin, Pepsin.​

Answer 1

Answer:

i. Bile:

• Bile helps to neutralize acidic chyme.
• Bile salts bring about fat emulsification.
• Bile pigments give colour to the faecal matter.

ii. HCI:

• HCl stops the salivary amylase action.
• HCl provides acidic medium required to convert inactive pepsinogen to pepsin.
• It kills the germs that may have come alongwith the food.
• HCl soften the food.

iii. Saliva:

• Saliva is watery, it converts food into a paste.
• Saliva contains enzymes like salivary amylase or ptyalin, maltase.
• These enzymes act on carbohydrate component of food, i.e. starch.
• Ptyalin acts on starch and converts it into maltose.
• Mucus in saliva binds to food and makes it slippery.

iv. Insulin:

• Insulin controls blood sugar level of the body.

v. Pepsin:

• Pepsin acts on proteins and converts it to Peptones and Proteoses.

Answer 2

$\huge{\mathbf{Bile :}}$

• The bile juice is secreted by liver.
• This juice breakdown the large fat molecules into small molecules.
• The bile juice is stores in gall bladder.

$\huge{\mathbf{HCL :}}$

• The full form of HCL is Hydrochloric acid.
• The digestive juice contains HCL
• It is secreted by Gastric glands.
• HCL kills harmful bacteria present in food.
• It also provides acidic medium for the activation of pepsin.

$\huge{\mathbf{Saliva :}}$

• Saliva is secreted by salivary glands.
• It consists enzymes called salivary amylase (ptyalin)
• It converts starch into sugar.
• Our mouth waters when we eat or smell something we like. xD

$\huge{\mathbf{Insulin :}}$

• Insulin is secreted by pancreas.
• Insulin converts the sugar into energy in our body.
• It releases by beta cells in our pancreas.

$\huge{\mathbf{Pepsin :}}$

• The digestive juice contains pepsin.
• It is secreted by Gastric glands.
• Pepsin acts on proteins found in food.
• It is a protein digesting system.