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Audio Notes: Biomolecules Video Lecture | Biology Class 11 - NEET

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FAQs on Audio Notes: Biomolecules Video Lecture - Biology Class 11 - NEET

1. What are the main types of biomolecules important for NEET preparation?

Ans. The main types of biomolecules include carbohydrates, proteins, lipids, and nucleic acids. Carbohydrates serve as energy sources and structural components; proteins are crucial for various functions including enzymatic activities and structural support; lipids are important for energy storage and membrane formation; and nucleic acids, such as DNA and RNA, are essential for genetic information storage and transfer.

2. How do enzymes function as proteins in biochemical reactions?

Ans. Enzymes are specialized proteins that act as catalysts in biochemical reactions. They lower the activation energy required for reactions to occur, thereby increasing reaction rates. Enzymes have specific active sites that bind to substrates, facilitating the conversion of substrates into products. Factors such as temperature, pH, and substrate concentration can affect enzyme activity.

3. Why are nucleic acids considered vital for living organisms?

Ans. Nucleic acids, primarily DNA and RNA, are vital for living organisms because they store and transmit genetic information. DNA contains the instructions for building proteins and regulating cellular activities, while RNA plays key roles in translating these instructions into proteins. This central dogma of molecular biology is fundamental to the functioning and reproduction of all living cells.

4. What roles do lipids play in biological membranes?

Ans. Lipids, particularly phospholipids, are essential components of biological membranes. They form bilayers that create a barrier between the interior of the cell and its environment. This structure is critical for maintaining cellular integrity, facilitating communication between cells, and providing a medium for the movement of proteins and other molecules within the membrane. Lipids also contribute to the fluidity and flexibility of membranes.

5. How do carbohydrates function in energy metabolism?

Ans. Carbohydrates are key sources of energy for living organisms. They are broken down through metabolic pathways, such as glycolysis, to produce ATP (adenosine triphosphate), which is the primary energy currency of the cell. Simple sugars like glucose can be rapidly utilized for energy, while complex carbohydrates such as starch and glycogen serve as stored energy that can be mobilized when needed.

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Oct 15, 2025 Last updated

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	Biology Class 11 198 videos\|524 docs\|136 tests

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198 videos|524 docs|136 tests

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