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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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4.
The melting points and solubility of water of amino acids are generally higher than that of the corresponding halo acids. Explain.

Amino acids are dipolar in nature (⁺NH₃-CHR-COO^-) and have strong dipolar interaction. Amino acids have amino (basic) group and carboxylic (acidic) group. A proton which comes from carboxylic group is accepted by amino group. Thus amino acid exists in the form of Zwitter ion.

Due to this ionic form, amino acids become crystalline solids and due to this salt like structure, show higher melting point.

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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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