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NCERT solutions for Class 11 Biology chapter 9 - Biomolecules

Biology Textbook for Class 11

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NCERT Biology Class 11

Biology Textbook for Class 11

Chapter 9 - Biomolecules

Pages 160 - 161

Q 1 | Page 161

What are macromolecules? Give examples.

Q 2 | Page 160

Illustrate a glycosidic, peptide and a phospho-diester bond.

Q 3 | Page 160

What is meant by tertiary structure of proteins?

Q 4 | Page 160

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.

Q 5 | Page 160

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?

Q 6 | Page 160

Find out and make a list of proteins used as therapeutic agents. Find other applications of proteins (e.g., cosmetics, etc.)

Q 7 | Page 160

Explain the composition of triglyceride.

Q 8 | Page 161

Can you describe what happens when milk is converted into curd or yoghurt from your understanding of proteins.

Q 9 | Page 161

Can you attempt building models of biomolecules using commercially available atomic models (Ball and Stick models).

Q 10 | Page 161

Attempt titrating an amino acid against a weak base and discover the number of dissociating ( ionizable ) functional groups in the amino acid.

Q 11 | Page 161

Draw the structure of the amino acid, alanine

Q 12 | Page 161

What are gums made of ? Is fevicol different ?

Q 13 | Page 161

Find out a qualitative test for proteins, fats and oils, amino acids and test, any fruit juice, saliva, and urine for them.

Q 14 | Page 161

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!

Q 15 | Page 161

Describe the important properties of enzymes.

NCERT Biology Class 11

Biology Textbook for Class 11

NCERT solutions for Class 11 Biology chapter 9 - Biomolecules

NCERT solutions for Class 11 Biology chapter 9 (Biomolecules) include all questions with solution and detail explanation from Biology Textbook for Class 11. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. has created the CBSE Biology Textbook for Class 11 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at are providing such solutions so that students can prepare for written exams. These NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 11 Biology chapter 9 Biomolecules are Chemical Constituents of Living Cells, Introduction of Biomolecules, Structure of Proteins, Structure and Function of Carbohydrates, Structure and Function of Lipids, Nucleic Acids, Enzymes - Factors Affecting Enzyme Activity, Metabolic Basis for Living, Analyse - Chemical Composition, Primary and Secondary Metabolites, Biomacromolecules, Concept of Proteins, Nature of Bond Linking Monomers in a Polymer, Dynamic State of Body Constituents – Concept of Metabolism, The Living State, Concept of Enzymes, Enzymes - Chemical Reactions, Enzymes - High Rates of Chemical Conversions, Nature of Enzyme Action, Classification and Nomenclature of Enzymes, Enzymes - Co-factors, Concept of Polysaccharides.

Using NCERT solutions for Class 11 Biology by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 11 prefer NCERT Textbook Solutions to score more in exam.

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