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ANSWERS & SOLUTIONS
1] c
Sol: Cellulose is polymer of glucose, it is not a monosaccharide 
2] b
Sol: Cellulose is major content in the plant cells 
3] b
Sol: Glucose is Aldohexose 
4] c
Sol: Lipids can give more energy in metallic process 
5] a
Sol: Starch is polymer of ? - glucose. 
6] a
Sol: In the formation osazone, three phenyl hydrazine is needed 
7] a
Sol: Molish’s test is given by all carbohydrates 
8] b
Sol: Fructose is ketose. 
9] b
Sol: Metabolic activities of cells are controlled DNA 
10] b
Sol: Glycine  does not have asymmetric carbon 
LH Practice Sheet BIOMOLECULES
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FAQs on Question Bank (Solutions): Biomolecules - Chemistry Class 12 - NEET

1. What are biomolecules?
Ans. Biomolecules are organic molecules that are essential for the functioning of living organisms. They include carbohydrates, lipids, proteins, and nucleic acids. These biomolecules are involved in various biological processes and play a crucial role in maintaining the structure and function of cells.
2. What are carbohydrates and their functions in living organisms?
Ans. Carbohydrates are biomolecules composed of carbon, hydrogen, and oxygen atoms. They serve as an important source of energy for living organisms. They are also involved in providing structural support, cell recognition, and cell signaling. Additionally, carbohydrates play a role in the immune system and serve as a storage form of energy in the form of glycogen in animals and starch in plants.
3. How do lipids contribute to cellular functions?
Ans. Lipids are biomolecules that are insoluble in water but soluble in organic solvents. They serve several functions in living organisms, including acting as a structural component of cell membranes, providing insulation and protection to organs, and serving as a source of energy. Lipids also play a role in cell signaling and act as precursors for the synthesis of hormones and other bioactive molecules.
4. What are proteins and their significance in living organisms?
Ans. Proteins are complex biomolecules composed of amino acids. They have diverse functions in living organisms, such as serving as enzymes that catalyze biochemical reactions, acting as structural components, participating in cell signaling, and facilitating transportation of molecules. Proteins also play a crucial role in the immune system as antibodies and contribute to gene expression and regulation.
5. What is the importance of nucleic acids in living organisms?
Ans. Nucleic acids, including DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), are biomolecules that carry genetic information in living organisms. DNA stores the genetic instructions necessary for the development and functioning of organisms, while RNA plays a role in protein synthesis. Nucleic acids are crucial for inheritance, as they allow the transfer of genetic information from one generation to the next.
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