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CBSE Video lectures for download

     

=Chapter 1 The Living World

=Chapter 2 Biological Classification

=Chapter 3 Plant Kingdom

=Chapter 4 Animal Kingdom

=Chapter 5 Morphology of Flowering Plants

=Chapter 6 Anatomy of Flowering Plants

=Chapter 7 Structural Organisation in Animals

=Chapter 8 Cell The Unit of Life

=Chapter 9 Biomolecules

=Chapter 10 Cell Cycle and Cell Division

=Chapter 11 Transport in Plants

=Chapter 12 Mineral Nutrition

=Chapter 13 Photosynthesis in Higher Plants

=Chapter 14 Respiration in Plants

=Chapter 15 Plant Growth and Development

=Chapter 16 Digestion and Absorption

=Chapter 17 Breathing and Exchange of Gases

=Chapter 18 Body Fluids and Circulation

=Chapter 19 Excretory Products and their Elimination

=Chapter 20 Locomotion and Movement

=Chapter 21 Neural Control and Coordination

=Chapter 22 Chemical Coordination and Integration

 

Chapter 9 Biomolecules

Download NCERT Solutions for Class 11 Biology

Chapter 9 Biomolecules

(Link of Pdf File is given below at the end of the Questions list)

In this pdf file you can see answers of following Questions

 

Question 1:
What are macromolecules? Give examples.
Question 2:
Illustrate a glycosidic, peptide and a phospho-diester bond.
Question 3:
What is meant by tertiary structure of proteins?
Question 4:
Find and write down structures of 10 interesting small molecular weight biomolecules. Find if there is any industry which manufactures the compounds by isolation. Find out who are the buyers.
Question 5:
Proteins have primary structure. If you are given a method to know which amino acid is at either of the two termini (ends) of a protein, can you connect this information to purity or homogeneity of a protein?
Question 6:
Find out and make a list of proteins used as therapeutic agents. Find other applications of proteins (e.g., cosmetics, etc.)

Question 7:
Explain the composition of triglyceride.
Question 8:
Can you describe what happens when milk is converted into curd or yoghurt from your understanding of proteins.
Question 9:
Can you attempt building models of biomolecules using commercially available atomic models (Ball and Stick models).

Question 10:
Attempt titrating an amino acid against a weak base and discover the number of dissociating ( ionizable ) functional groups in the amino acid.
Question 11:
Draw the structure of the amino acid, alanine.
Question 12:
What are gums made of? Is Fevicol different?
Question 13:
Find out a qualitative test for proteins, fats and oils, amino acids and test any fruit juice, saliva, sweat and urine for them.
Question 14:
Find out how much cellulose is made by all the plants in the biosphere and compare it with how much of paper is manufactured by man and hence what is the consumption of plant material by man annually. What a loss of vegetation!
Question 15:
Describe the important properties of enzymes.

 


 



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