Introduction to Biomolecules

Biomolecules are essential organic compounds found in living organisms. This chapter is a crucial part of NEET Chemistry as it connects biology and chemistry, explaining the chemical basis of life. Understanding biomolecules helps students appreciate the structure, function, and importance of molecules like carbohydrates, proteins, lipids, and nucleic acids.

StudentBro provides simplified and structured notes designed to make learning biomolecules easy and NEET-focused.

Direct Links to Download 2025-26 Chemistry Notes (PDF)

► Click “Download Here” next to your subject to access the free PDF.

What Are Biomolecules

Biomolecules are chemical compounds that play key roles in maintaining life processes. They include macromolecules like carbohydrates, proteins, lipids, and nucleic acids. This section introduces the basic nature of biomolecules and their significance in living systems.

Clear understanding of biomolecules helps NEET aspirants answer conceptual questions with confidence.

Carbohydrates

Carbohydrates are organic compounds composed of carbon, hydrogen, and oxygen. This section explains their general structure, classification, and biological importance.

StudentBro notes make it easy to understand the differences between monosaccharides, disaccharides, and polysaccharides, which is frequently asked in NEET.

Classification of Carbohydrates

Carbohydrates are classified based on their complexity:

• Monosaccharides

• Disaccharides

• Polysaccharides

Understanding classification helps students relate structure to function and prepares them for NEET questions on properties and reactions.

Proteins

Proteins are macromolecules made of amino acids linked by peptide bonds. This section introduces proteins, their building blocks, and importance in living organisms.

NEET often asks questions about amino acids, peptide bonds, and types of proteins. StudentBro notes explain these clearly for easy understanding.

Structure of Proteins

Proteins have four levels of structure: primary, secondary, tertiary, and quaternary. This section explains these structures in simple language, focusing on their biological relevance.

Understanding protein structure is essential for answering questions related to function and reactions in NEET.

Functions of Proteins

Proteins perform various functions in the body, including enzyme activity, structural roles, transport, and signaling. This section highlights the importance of proteins in daily life and biological processes.

This topic often appears in NEET as conceptual questions.

Lipids

Lipids are hydrophobic biomolecules that include fats, oils, and steroids. This section introduces lipids, their types, and biological significance.

StudentBro notes explain how lipids function as energy storage molecules and membrane components, which is commonly tested in NEET.

Types and Functions of Lipids

Lipids are classified into simple lipids, complex lipids, and derived lipids. This section discusses their roles in energy storage, insulation, and cell membrane formation.

Understanding lipids conceptually helps students answer reasoning and application-based questions.

Nucleic Acids

Nucleic acids are polymers of nucleotides that store and transfer genetic information. This section explains DNA and RNA, their structure, and biological function.

NEET frequently asks about nucleotide composition, base pairing, and the differences between DNA and RNA. StudentBro notes simplify these concepts.

Structure and Function of Nucleic Acids

DNA has a double helix structure while RNA is single-stranded. This section explains their functional roles in genetic information storage and protein synthesis.

Clear understanding of nucleic acids is essential for answering NEET questions on molecular biology and organic chemistry intersection.

Vitamins and Hormones

This section briefly introduces biologically important molecules such as vitamins and hormones, emphasizing their chemical nature and function.

Application-based questions in NEET often involve vitamins and hormones, making this a high-yield topic.

Importance of Biomolecules in Daily Life

Biomolecules are not just essential in organisms but also have industrial and medical applications. Understanding their uses helps students relate chemistry concepts to real-world scenarios.

NEET sometimes includes real-life application questions from this topic.

Why Biomolecules Are Important for NEET

The chapter Biomolecules is scoring because it is conceptual, direct, and highly relevant to NEET Biology and Chemistry integration.

A strong grasp of this chapter helps students tackle:

• Conceptual MCQs

• Assertion-reason questions

• Structure-function based questions

Advantages of StudentBro NEET Chemistry Notes

StudentBro NEET Chemistry notes are designed to:

• Simplify complex biomolecule concepts

• Focus on NEET-relevant content

• Improve conceptual clarity and retention

• Support quick revision

These notes are suitable for first-time learners and repeat NEET aspirants alike.

Conclusion

The chapter Biomolecules forms a bridge between chemistry and biology. Understanding carbohydrates, proteins, lipids, and nucleic acids strengthens a student’s foundation for NEET Chemistry and Biology.

With StudentBro’s structured, simplified, and exam-oriented NEET Chemistry notes, aspirants can revise efficiently and approach the exam with confidence.