Biomolecules Class 12 Notes, Mind map And Scoring Questions: CBSE

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Welcome to our comprehensive guide on Biomolecules for Class 12 students. Whether you're studying for your CBSE exams or simply looking to deepen your understanding of this fascinating subject, you're in the right place. In this article, we have compiled detailed class notes, mind maps, and scoring questions to help you master the concepts of Biomolecules. Biomolecules are the building blocks of life, playing critical roles in the functioning of living organisms.

From carbohydrates to lipids, proteins, and nucleic acids, each biomolecule has its own unique structure and function. Understanding these molecules is essential for grasping fundamental concepts in biology, biochemistry, and genetics. Our notes provide a clear and concise overview of each biomolecule, highlighting their structures, properties, and important functions.

The mind maps offer a visual representation of the interconnections between biomolecules, aiding in memory retention and concept mapping. Lastly, our scoring questions are designed to test and reinforce your understanding, allowing you to assess your knowledge and identify areas for improvement. So, dive in and explore our Biomolecules Class 12 Notes, Mind map, and Scoring Questions to ace your exams and enhance your knowledge of this fascinating subject.

Class 12 Chemistry Chapter 10, dedicated to Biomolecules, offers an extensive exploration into the fascinating world of biological molecules that are crucial for life processes. This chapter is a key part of the Class 12 curriculum, providing students with vital insights into the structure, function, and importance of biomolecules. The Class 12 Chemistry Biomolecules notes encompass comprehensive details about various biomolecules such as carbohydrates, proteins, nucleic acids, and vitamins, essential for students in their academic journey in chemistry.

For Class 12th students, understanding biomolecules is not just important for exams but also for a foundational knowledge in biochemistry, which has applications in fields like medicine, nutrition, and biotechnology. The biomolecules class 12 chemistry notes are crafted to cover every aspect of the topic, including the classification of biomolecules, their physical and chemical properties, and their roles in biological systems.

These notes also include biomolecules class 12th MCQs, which are crucial for students preparing for competitive exams as well as their board exams. The biomolecules class 12 chemistry important questions focus on key areas that are often emphasized in exams, helping students to solidify their understanding and prepare effectively.

For a more visual approach to learning, the biomolecules class 12 mind map provides a quick and efficient way to review the entire chapter, making it easier for students to recall important information during their exams. Additionally, the biomolecules class 12 chemistry notes PDF offers a convenient way for students to access study materials anytime, enhancing their learning experience.

In conclusion, the Chapter 10 of Class 12 Chemistry is a comprehensive guide for understanding biomolecules. With detailed notes, mind maps, MCQs, and important questions, students can effectively prepare for their exams and gain a thorough understanding of this vital topic in the field of chemistry.

Classification of Biomolecules

Biomolecules in living organisms are classified into several major categories based on their structure and function. These include carbohydrates, lipids, proteins, nucleic acids, and enzymes. Each class of biomolecules plays a crucial role in the structure and functioning of cells and organisms.


Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen, often following the formula (CH₂O)n. They are classified into monosaccharides, disaccharides, oligosaccharides, and polysaccharides. Carbohydrates serve as the primary source of energy and as structural components in organisms.


Lipids are a diverse group of hydrophobic molecules, including fats, oils, waxes, phospholipids, and steroids. They are essential for storing energy, forming cell membranes, and acting as signaling molecules.


Proteins are large biomolecules made of amino acids linked by peptide bonds. They are crucial for various functions such as catalysis of biochemical reactions, structural support, transport, communication, and immune response.

Nucleic Acids

Nucleic acids, namely DNA and RNA, are the molecules responsible for storing and transmitting genetic information. DNA serves as the blueprint for protein synthesis, while RNA plays a role in translating this genetic code into proteins.

Enzymes and Their Functions

Enzymes are specialized proteins that act as catalysts in biochemical reactions. They speed up reactions by lowering the activation energy, thus playing a vital role in metabolism and other cellular processes.

Importance of Biomolecules in Living Organisms

Biomolecules are fundamental to life, as they constitute the cells and perform a range of functions necessary for the survival and growth of living organisms. They are involved in everything from energy production and storage to genetic information transfer and cellular structure maintenance.

Scoring Questions for Class 12 CBSE Exams

In Class 12 CBSE exams, scoring questions on biomolecules often involve understanding their structures, functions, and roles in biological systems. Questions may include explaining the properties of different types of biomolecules, their classification, and the significance of enzymes in metabolism. Additionally, questions might cover the application of biomolecules in health and disease, making a thorough understanding of this chapter crucial for success in exams.

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