Biomolecules
CBSE · Class 11 · Biology
Most important questions from Biomolecules for CBSE Class 11 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
What is the molecular weight range for biomolecules in the acid-soluble pool?
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18-800 Daltons
The chapter specifies that biomolecules in the acid-soluble pool have molecular weights ranging from 18 to around 800 daltons.
Which of these is NOT a type of macromolecule found in living systems?
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Lipids
Proteins, nucleic acids and polysaccharides are the main macromolecules in living systems. Lipids are present in the acid-insoluble fraction because they are associated with membranes, but they are not strictly macromolecules. So the correct choice is lipids.
What is the primary function of enzymes?
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Catalyze biochemical reactions
Enzymes are proteins that catalyze biochemical reactions in cells, dramatically increasing reaction rates.
How many types of nucleotides exist?
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5
The chapter summary states that there are 5 types of nucleotides. These are adenylic, thymidylic, guanylic, uridylic and cytidylic acids. Therefore, the correct answer is 5.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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