NCERT Solutions for Biology for Chapter 16 Digestion and Absorption Class 11 explains every detail and all the topic of the chapter in-depth. Moreover, the solutions are in simple language and contain all the relevant study material. Also, due to easy language students can easily understand the meaning of each keyword without any difficulty. For a clearer and better understanding of the chapter refer to NCERT Solutions.
These Digestion and Absorption Class 11 Notes for Biology for Chapter 16 will help you in your exam preparation. Moreover, the study material is prepared by our team of professionals will guide you in it. As a result, it will increase your knowledge and learning abilities. Digestion refers to the conversion of complex food in a simpler form so that the body can absorb it to produce energy from it. While absorption refers to the process of absorbing required minerals from the food into the bloodstream.
Column I | Column II |
(a) Bilirubin and biliverdin | (i) Parotid |
(b) Hydrolysis of starch | (ii) Bile |
(c) Digestion of fat | (iii) Lipases |
(d) Salivary gland | (iv) Amylases |
The enzyme trypsin (present in the pancreatic juice) activates the inactive enzyme chymotrypsinogen into chymotrypsin.
Chymotrypsinogen Chymotrypsin
(Inactive) (Active)
The activated chymotrypsin plays an important role in the further breakdown of the partially-hydrolysed proteins.
Proteins Peptides
The other digestive enzymes of the same category are trypsinogen and carboxypeptidase. These are secreted by the same source-gland, pancreas.
Trypsinogen is present in an inactive form in the pancreatic juice. The enzyme enterokinase – secreted by the intestinal mucosa – activates trypsinogen into trypsin.
TrypsinogenTrypsin + Inactive peptide
The activated trypsin then further hydrolyses the remaining trypsinogen and activates other pancreatic enzymes such as chymotrypsinogen and carboxypeptidase. Trypsin also helps in breaking down proteins into peptides.
ProteinsPeptides
Carboxypeptidases act on the carboxyl end of the peptide chain and help in releasing the last amino acids.
PeptidesSmall peptide chain + Amino acids
Explanation of the answer.
Q1. Is Chapter 16 of Biology Digestion and Absorption Class 11 difficult to study?
Answer: No, Chapter 16 of Biology Class 11 is not that difficult to study when you understand the topics. We provide NCERT Solutions and online live classes by experts to clear the doubts and make it easier for the students to understand. These solutions are prepared by the experts to clear the doubts of the students.
Q2. Describe the process of digestion in the stomach?
Answer: The digestion starts in the stomach and it gets completed in the small intestine. The digestive juice secreted by digestive glands which consists of hydrochloric acid, pepsinogen, mucus and rennin. The Proenzyme pepsinogen on exposure to hydrochloric acid converts to an active enzyme called pepsin which is a proteolytic enzyme of the stomach. Pepsin converts proteases into peptones.