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Biomolecules

Short Answer Type

1. Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six membered ring compounds) are insoluble in water. Explain.

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What are the expected products of hydrolysed of lactose?

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How do you explain the absence of aldehyde group in the penta acetate of D-glucose?

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The melting points and solubility of water of amino acids are generally higher than that of the corresponding halo acids. Explain.

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Where does the water present in the egg go after the boiling the egg?

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6. Why cannot vitamin C be stored in our body?

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What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?

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When RNA is hydrolysed, there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of RNA?

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9. What is a biomoiecule?

i) Biomolecules are molecules that occur naturally in living organisms. Biomolecules include macromolecules like proteins, carbohydrates, lipids and nucleic acids.

ii) It also includes small molecules like primary and secondary metabolites and natural products.

iii) Biomolecules consists mainly of carbon and hydrogen with nitrogen, oxygen, sulphur, and phosphorus. Biomolecules are very large molecules of many atoms, that are covalently bound together.

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10. Define carbohydrates.

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