Read and download NCERT Class 12 Chemistry Biomolecules in NCERT book for Class 12 Chemistry. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Chemistry textbook for Class 12 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 12 Chemistry to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 12 Chemistry Biomolecules
Class 12 Chemistry students should refer to the following NCERT Book Biomolecules in Class 12. This NCERT Book for Class 12 Chemistry will be very useful for exams and help you to score good marks
Biomolecules NCERT Book Class 12
A living system grows, sustains and reproduces itself. The most amazing thing about a living system is that it is composed of non-living atoms and molecules. The pursuit of knowledge of what goes on chemically within
a living system falls in the domain of biochemistry. Living systems are made up of various complex biomolecules like carbohydrates, proteins, nucleic acids, lipids, etc. Proteins and carbohydrates are essential constituents of our food. These biomolecules interact with each other and constitute the molecular logic of life processes. In addition, some simple molecules like vitamins and mineral salts also play an important role in the functions
of organisms. Structures and functions of some of these biomolecules are discussed in this Unit.
Carbohydrates
Carbohydrates are primarily produced by plants and form a very large group of naturally occurring organic compounds. Some common examples are cane sugar, glucose, starch, etc. Most of them have a general formula, Cx(H2O)y, and were considered as hydrates of carbon from where the name carbohydrate was derived. For example, the molecular formula of glucose (C6H12O6) fits into this general formula, C6(H2O)6. But all the compounds which fit into this formula may not be classified as carbohydrates. Acetic acid (CH3COOH) fits into this general formula, C2(H2O)2 but is not a carbohydrate. Similarly, rhamnose, C6H12O5 is a carbohydrate but does not fit in this definition. A large number of their reactions have shown that they contain specific functional groups. Chemically, the carbohydrates may be defined as optically active polyhydroxy aldehydes or ketones or the compounds which produce such units on hydrolysis. Some of the carbohydrates,which are sweet in taste, are also called sugars. The most common sugar, used in our homes is named as sucrose whereas the sugar
present in milk is known as lactose. Carbohydrates are also called saccharides (Greek: sakcharon means sugar).
Classification of Carbohydrates
Carbohydrates are classified on the basis of their behaviour on hydrolysis. They have been broadly divided into following three groups.
(i) Monosaccharides: A carbohydrate that cannot be hydrolysed further to give simpler unit of polyhydroxy aldehyde or ketone is called a monosaccharide. About 20 monosaccharides are known to occur in nature. Some common examples are glucose, fructose, ribose, etc. (ii) Oligosaccharides: Carbohydrates that yield two to ten monosaccharide units, on hydrolysis, are called oligosaccharides. They are further classified as disaccharides, trisaccharides, tetrasaccharides, etc., depending upon the number of monosaccharides, they provide on hydrolysis. Amongst these the most common are disaccharides. The two monosaccharide units obtained on hydrolysis of a disaccharide may be same or different. For example, sucrose on hydrolysis gives one molecule each of glucose and fructose whereas maltose gives two molecules of glucose only.
(iii) Polysaccharides: Carbohydrates which yield a large number of monosaccharide units on hydrolysis are called polysaccharides. Some common examples are starch, cellulose, glycogen, gums,etc. Polysaccharides are not sweet in taste, hence they are also called non-sugars.
The carbohydrates may also be classified as either reducing or nonreducing sugars. All those carbohydrates which reduce Fehling’s solution and Tollens’ reagent are referred to as reducing sugars. All monosaccharides whether aldose or ketose are reducing sugars. In disaccharides, if the reducing groups of monosaccharides i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars e.g. sucrose. On the other hand, sugars in which these functional groups are free, are called reducing sugars, for example, maltose and lactose.
Excercise
14.1 What are monosaccharides?
14.2 What are reducing sugars?
14.3 Write two main functions of carbohydrates in plants.
14.4 Classify the following into monosaccharides and disaccharides.Ribose, 2-deoxyribose, maltose, galactose, fructose and lactose.
14.5 What do you understand by the term glycosidic linkage?
14.6 What is glycogen? How is it different from starch?
14.7 What are the hydrolysis products of
(i) sucrose and (ii) lactose?
14.8 What is the basic structural difference between starch and cellulose?
14.9 What happens when D-glucose is treated with the following reagents?
(i) HI (ii) Bromine water (iii) HNO3
14.10 Enumerate the reactions of D-glucose which cannot be explained by its open chain structure.
14.11 What are essential and non-essential amino acids? Give two examples of each type.
14.12 Define the following as related to proteins
(i) Peptide linkage (ii) Primary structure (iii) Denaturation.
14.13 What are the common types of secondary structure of proteins?
Please refer to attached file for NCERT Class 12 Chemistry Biomolecules
NCERT Class 12 Chemistry Answers and Solutions |
NCERT Class 12 Chemistry Appendix I |
NCERT Class 12 Chemistry Appendix II |
NCERT Class 12 Chemistry Appendix III |
NCERT Class 12 Chemistry Logarithms |
NCERT Class 12 Chemistry Logarithms Appendix IV |
NCERT Class 12 Chemistry Part 1 The Solid State |
NCERT Class 12 Chemistry The Solid State |
NCERT Class 12 Chemistry Solutions |
NCERT Class 12 Chemistry Electrochemistry |
NCERT Class 12 Chemistry Chemical Kinetics |
NCERT Class 12 Chemistry Surface Chemistry |
NCERT Class 12 Chemistry General Principles and Processes of Isolation of Elements |
NCERT Class 12 Chemistry The P Block Elements |
NCERT Class 12 Chemistry The d and f Block Elements |
NCERT Class 12 Chemistry Coordination Compounds |
NCERT Class 12 Chemistry Haloalkanes and Haloarenes |
NCERT Class 12 Chemistry Alcohols Phenols and Ethers |
NCERT Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids |
NCERT Class 12 Chemistry Amines |
NCERT Class 12 Chemistry Biomolecules |
NCERT Class 12 Chemistry Polymers |
NCERT Class 12 Chemistry Chemistry in Everyday Life |
Chemistry NCERT Book Class 12 Biomolecules
The above NCERT Books for Class 12 Chemistry Biomolecules have been published by NCERT for latest academic session. The textbook by NCERT for Biomolecules Chemistry Class 12 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Biomolecules NCERT etextbooks as the exams for Class 12 Chemistry are always asked as per the syllabus defined in these ebooks. These Class 12 Biomolecules book for Chemistry also includes collection of question. We have also provided NCERT solutions for Class 12 Chemistry which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 12 students.
NCERT Book Class 12 Chemistry Biomolecules
The latest NCERT book for Biomolecules pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 12 Chemistry Biomolecules are designed to enhance the overall understanding of students. All Class 12 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 12 students.
Biomolecules NCERT Book Class 12 Chemistry
As the students of Class 12 need the books for their regular studies, we have provided all NCERT book for Biomolecules in pdf here for free download. All pdf NCERT books available here for Class 12 will help them to read on their mobile or computers. They can take a print of the Class 12 Chemistry NCERT Book Biomolecules pdf easily and use them for studies. The NCERT textbooks for Class 12 Chemistry have been provided chapter-wise and can be downloaded for free of cost.
Class 12 Chemistry Biomolecules NCERT Book
Along with Chemistry Class 12 NCERT Book in Pdf for Biomolecules we have provided all NCERT Books in English Medium for Class 12 which will be really helpful for students who have opted for english language as a medium. Class 12 students will need their books in English so we have provided them here for all subjects in Class 12.
Class 12 Biomolecules NCERT Book Chemistry
For Class 12 Biomolecules we have provided books for students who have opted for Hindi and Urdu medium too. You can click on the links provided above to download all Hindi medium Class 12 Chemistry Biomolecules book in easy to read pdf format. These books will help Class 12 Chemistry students to understand all topics and also strictly follow latest syllabus for their studies. If you are looking to download the pdf version of Class 12 Chemistry Biomolecules textbook issued by NCERT then you have come to the correct website
You can download the NCERT Book for Class 12 Chemistry Biomolecules for latest session from StudiesToday.com
Yes, you can click on the link above and download chapter wise NCERT Books in PDFs for Class 12 for Chemistry Biomolecules
Yes, the NCERT Book issued for Class 12 Chemistry Biomolecules have been made available here for latest academic session
You can easily access the link above and download the Class 12 NCERT Books Chemistry Biomolecules for each chapter
There is no charge for the NCERT Book for Class 12 Chemistry Biomolecules you can download everything free
Regular revision of NCERT Books given on studiestoday for Class 12 subject Chemistry Biomolecules can help you to score better marks in exams