Question

The effect of some compounds (present in partially digested food) on pancreatic secretion is depicted in the bar graph. Compounds 1, 2, and 3 represent:

A) Acid, Fat, Salt
B) Salt, Peptone, Fat
C) Acid, Fat, Peptone
D) Pepsin, Acid, Fat

Answer 1

Hint: Pancreas is the part of the digestive system where the digestion of the fats, proteins and carbohydrate takes place. It is located in the abdomen. It is both exocrine and endocrine in function.

Complete answer:
The pancreas is the exocrine and endocrine gland which is an important organ of the digestive system. It breaks down the foot nutrients into simple molecules which provide energy. The exocrine function of the pancreas helps in breaking down the food.
The pancreas secretes the enzymes called the pancreatic juice which helps in breaking down food. It breaks down sugars, starch and fat. The pancreatic juices are sent to the small intestine by the ducts. These are lipases, amylase and protease. Lipase helps in breakdown of fat which works along with the bile.
In the graph given below represents the level of enzymes and sodium bicarbonate.
In the bar 1- The small intestine receives highly acidic food from the stomach. So, the large amount of sodium bicarbonate is secreted by the epithelium so as to neutralise the effect of acid in the intestine.
In the bar 2- The level of digestive juices is higher. It is secreted by the acinar cells so as to break the complex fatty acids and peptones into simpler substances.

Thus, the correct answer is option C.

Note:
The amylase is an enzyme which helps in breaking down complex starch in simple monosaccharides. Proteases break the proteins into lighter chains. It also helps in protecting the intestine from the germs. Lipase helps in breaking fat and also helps in absorbing fat soluble vitamins.