Class 11 Biology Chapter 9 – Biomolecules Study Material PDF Download | English & Tamil Medium | NEET 2027 Preparation | NEET Biology Tamil
Class 11 Biology Chapter 9 – Biomolecules Study Material PDF Download | English & Tamil Medium | NEET 2027 Preparation | NEET Biology Tamil
Download Class 11 Biology Chapter 9 Biomolecules Notes PDF in English & Tamil Medium for NEET 2027. NCERT notes, PYQs, MCQs & solutions.
Introduction
Welcome to NEET Biology Tamil – your free learning platform for NEET, CBSE, and Tamil Nadu State Board Biology preparation.
In this post students can download Class 11 Biology Chapter 9 – Biomolecules study materials in both English Medium and Tamil Medium.
These materials are useful for NEET 2027 aspirants, CBSE students, and Tamil Nadu State Board students.
📚 Chapter Name
English:
Class 11 Biology Chapter 9: Biomolecules
Tamil:
வகுப்பு 11 உயிரியல் பாடம் 9 : உயிரி மூலக்கூறுகள்
📌 Available Study Materials
✅ Complete Chapter Notes – English Medium
✅ முழுமையான குறிப்புகள் – தமிழ் வழி
✅ NCERT Based NEET Notes
✅ Important Definitions
✅ Important Diagrams
✅ Important Tables
✅ Mind Maps / Short Notes
✅ Previous Year NEET Questions
✅ Chapter Wise Practice MCQs
✅ Answer Key with Detailed Solutions
About Chapter – Biomolecules
Biomolecules explains the chemical compounds present inside living organisms and their biological functions.
Important concepts covered:
🔹 Primary and secondary metabolites
🔹 Carbohydrates
🔹 Proteins
🔹 Lipids
🔹 Nucleic acids
🔹 Enzymes
🔹 Structure of proteins
🔹 Enzyme action and factors affecting enzymes
Important scientists:
🔬 Watson and Crick – DNA double helix model
🔬 Emil Fischer – Lock and Key model of enzyme action
🔬 Koshland – Induced Fit theory
Important examples:
✔ Glucose
✔ Glycogen
✔ Cellulose
✔ Amino acids
✔ DNA
✔ RNA
✔ Enzymes
This chapter is very important for NEET because many questions are asked from enzymes, proteins and NCERT tables.
🔥 NEET 2027 Importance of This Chapter
Biomolecules is one of the most repeated chapters in NEET Biology.
Previous Year NEET Question Trend:
NEET 2022 – 4 Questions
NEET 2023 – 4 Questions
NEET 2024 – 5 Questions
NEET 2025 – 4 Questions
NEET 2026 – 4 Questions
Students should focus on NCERT examples, biomolecule structures and enzyme concepts.
⭐ Important NEET 2027 Topics From This Chapter
⭐ Carbohydrates Classification
⭐ Monosaccharides & Polysaccharides
⭐ Amino Acids
⭐ Protein Structure Levels
⭐ Nucleic Acids
⭐ DNA & RNA Differences
⭐ Enzymes
⭐ Enzyme Classification
⭐ Activation Energy
⭐ Factors Affecting Enzyme Activity
⭐ NCERT Tables
📥 Download Study Material PDF
📘 Class 11 Biology Chapter 9 Biomolecules Notes – English Medium PDF
👇 Download Here
📗 வகுப்பு 11 உயிரியல் பாடம் 9 உயிரி மூலக்கூறுகள் குறிப்புகள் – Tamil Medium PDF
👇 Download Here
📝 NEET Previous Year Solved Questions (with Exam Name & Year)
Question 1 (NEET 2026)
The most abundant protein in the animal world is:
(A) Insulin
(B) Collagen
(C) Keratin
(D) Haemoglobin
Question 2 (NEET 2025)
The basic unit of protein is:
(A) Fatty acid
(B) Glucose
(C) Amino acid
(D) Nucleotide
Question 3 (NEET 2025)
DNA contains which sugar?
(A) Ribose
(B) Deoxyribose
(C) Glucose
(D) Fructose
Question 4 (NEET 2024)
Enzymes are mainly:
(A) Carbohydrates
(B) Proteins
(C) Lipids
(D) Minerals
Question 5 (NEET 2024)
Lock and Key model was proposed by:
(A) Watson
(B) Fischer
(C) Darwin
(D) Mendel
Question 6 (NEET 2023)
Glycogen is a polymer of:
(A) Amino acids
(B) Glucose
(C) Fatty acids
(D) Nucleotides
Question 7 (NEET 2023)
Peptide bond is present in:
(A) Proteins
(B) Lipids
(C) DNA
(D) Cellulose
Question 8 (NEET 2022)
Nucleotide contains:
(A) Sugar + Base + Phosphate
(B) Protein + Lipid
(C) Glucose only
(D) Amino acid only
Question 9 (NEET 2022)
The genetic material present in most organisms is:
(A) Protein
(B) Lipid
(C) DNA
(D) Starch
Question 10 (NEET 2022)
Competitive inhibitors affect:
(A) Enzyme activity
(B) Cell wall
(C) Chromosomes
(D) Ribosomes
✅ Answer Key + Detailed Solutions
1. Answer: B – Collagen
Explanation: Collagen is the most abundant protein in animals.
2. Answer: C – Amino acid
Explanation: Proteins are polymers made up of amino acid units.
3. Answer: B – Deoxyribose
Explanation: DNA contains deoxyribose sugar while RNA contains ribose.
4. Answer: B – Proteins
Explanation: Most enzymes are protein molecules that act as biological catalysts.
5. Answer: B – Fischer
Explanation: Emil Fischer proposed the Lock and Key model of enzyme action.
6. Answer: B – Glucose
Explanation: Glycogen is a storage polysaccharide made of glucose units.
7. Answer: A – Proteins
Explanation: Amino acids are connected by peptide bonds to form proteins.
8. Answer: A – Sugar + Base + Phosphate
Explanation: A nucleotide consists of pentose sugar, nitrogenous base and phosphate group.
9. Answer: C – DNA
Explanation: DNA acts as genetic material in most living organisms.
10. Answer: A – Enzyme activity
Explanation: Competitive inhibitors compete with substrates and reduce enzyme activity.
📚 More Free Biology Materials Available
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