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
Digestion of starch starts in the stomach.
Where is the bile produced? Which component of the food does it help to digest?
Where is digested food absorbed into blood in human body?
Which part of the body secretes bile?
With which human organ system (or human systems) is the villi associated?
List the enzymes and their action on food in the stomach and intestine.
Given alongside is the diagram of the human alimentary canal.
(i) Name the parts 1-11 indicated by guidelines.
1.____ 2.____ 3.____ 4.____ 5.____ 6.____ 7.____ 8.____ 9.____ 10.___ 11.____
(ii) State the function of the juice secreted by the part 1.
(iii) State the function of the three enzymes found in the juice secreted by part 3.
Food are classified into three groups on the basis of the function they perform in our body. Name the three categories, and briefly give their functions. Also give their two sources each.
Fill in the blank.
Steapsin is also called _________
Write true or false for the below statement. Rewrite the false statements correctly
Pancreatic juice does not contain any enzyme.
Write true or false for the below statement. Rewrite the false statements correctly.
Saliva contains lipase which digests carbohydrates
Answer in detail.
What is meant by digestion? How does it differ from nutrition?
State one difference in nutrition: Parasite and Saprophyte
Correct the spellings: Ptorein
The question has four options. Choose the correct answer:
Stomach in vertebrates is the chief site of digestion of
Who is telling a lie?
Lung: I play an important role in excretion.
Write down the explanation.
Explain the structure of tooth.
Secretions of ____________ lubricate the lumen of the alimentary canal.
Identify the labels i, ii, iii, and iv in the given diagram of tooth anatomy.
Salivary glands secrete ______.
