Advertisements
Advertisements
Question
Give a reason.
Food becomes acidic in the stomach.
Advertisements
Solution
Food becomes acidic in the stomach because of the presence of hydrochloric acid. As the food reaches the stomach, it gets mixed with the hydrochloric acid present there. The hydrochloric acid plays the following roles in digestion:
- It initiates protein digestion by activating the conversion of pepsinogen to pepsin.
- It provides an acidic medium for the activity of pepsin and other enzymes present in gastric juice.
RELATED QUESTIONS
Define holozoic nutrition. Give one example
Write true or false for the below statement. Rewrite the false statements correctly.
The removal of faeces through the anus is called excretion.
Observe the diagram given alongside and answer the following:
- Name the parts numbered 1-8.
- Which parts shown in the diagram are non-living?
- Is the tooth suited for cutting, tearing or grinding?
- What is the function of parts 8 and 7?
- What is the total number of teeth present in adult human beings?
- Write the dental formula of human beings.
Describe the following: Digestion of fat in the intestine
How do the salivary glands come to know that there is food in the mouth and it is time to secrete saliva?
What is the length of the alimentary canal?
Throughout the length of the alimentary canal the layer which shows the presence of goblet cells is ______
Digestion of starch begins in the ______.
Why do we eat?
What causes movement of food inside the alimentary canal?
