BIOMOLECULES MCQ

🧬 INTRODUCTION

Biomolecules are the organic compounds that are essential for the structure and functioning of living organisms. These include carbohydrates, proteins, lipids, and nucleic acids. They form the basic building blocks of life and are involved in almost every biological process.

This chapter explains how different biomolecules are formed, their structure, classification, and biological importance. It also covers the role of enzymes, vitamins, and nucleic acids in metabolism and genetic information transfer.

Biomolecules is an important chapter for competitive exams because it combines concepts of chemistry and biology. Questions are usually concept-based, focusing on structure, function, and identification of biomolecules.

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⚡ Quick Revision Notes (Complete Chapter)

🍞 Carbohydrates:
Organic compounds made of C, H, O in ratio 1:2:1
Examples: glucose, fructose, starch, cellulose

🍬 Types of Carbohydrates:

• Monosaccharides: single unit (glucose)

• Disaccharides: two units (sucrose, lactose)

• Polysaccharides: many units (starch, glycogen)

🥩 Proteins:
Made of amino acids linked by peptide bonds
Function: growth, repair, enzymes, hormones

🧬 Amino Acids:
Building blocks of proteins
Contain amino group (-NH₂) and carboxyl group (-COOH)

🧈 Lipids:
Fats and oils
Energy storage molecules
Not soluble in water

🧪 Enzymes:
Biological catalysts made of proteins
Speed up biochemical reactions

💊 Vitamins:
Organic compounds required in small amounts
Deficiency causes diseases (e.g., scurvy, rickets)

🧫 Nucleic Acids:
DNA and RNA
Responsible for genetic information

🧬 DNA:
Double helix structure, stores genetic code

🧪 RNA:
Single stranded, helps in protein synthesis

⚡ ATP (Energy Currency):
Adenosine triphosphate provides energy for cellular activities

📌 Key Concept:
Biomolecules control structure, function, and metabolism of living organisms

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🚀 TEST INSTRUCTIONS (IMPORTANT)

📌 This is a CEE-level Biology MCQ practice test on Biomolecules.

🧠 Read each question carefully before answering.

🎯 Each question has only one correct option.

⏱️ Focus on accuracy first, speed second.

❌ Avoid guessing without proper concept understanding.

📊 After submitting, check your score and analyze mistakes.

🔁 Revise weak areas and retry the test for better performance.

💪 Treat this as a real exam practice session.

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BIOMOLECULES CEE PREP

1. Which is the simplest carbohydrate?

Glucose Starch Cellulose Glycogen

2. Which bond links amino acids?

Glycosidic Peptide Hydrogen Ionic

3. Enzymes are mainly made of?

Lipids Proteins Carbohydrates Vitamins

4. Which vitamin is fat soluble?

Vitamin C Vitamin B Vitamin D Vitamin B1

5. DNA contains?

Ribose sugar Deoxyribose sugar Glucose Fructose

6. Essential amino acids are?

Made in body Not made in body Only in plants Only in animals

7. Starch is made of?

Glucose Fructose Amino acids Fatty acids

8. Lipids are mainly used for?

Energy storage Oxygen transport Enzyme activity DNA formation

9. RNA contains?

Thymine Uracil DNA only bases No bases

10. Cellulose is found in?

Animal cell Plant cell wall Blood Enzymes

11. Which is a monosaccharide?

Glucose Starch Cellulose Protein

12. Proteins are made of?

Fatty acids Amino acids Sugars Nucleotides

13. ATP is called?

Genetic material Energy currency Protein Vitamin

14. Glycogen is stored in?

Plants Animals liver & muscles Bacteria only Fungi only

15. DNA full form?

Deoxyribonucleic acid Dinucleic acid Ribose nucleic acid None

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