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Biomolecules
The two strands in DNA are not identical but are complimentary. Explain.
(i) DNA has double helical structure in which two strands are twisted about each other held in position by H-bonds between the bases.
(ii) The two bases guanine and cytosine are complementary bases of DNA. Similarly, adenine and thymine are also complementary bases of DNA.
If one of these bases is located on one chain of DNA, its complementary base is hydrogen bonded to it on the other chain.
This means that the guanine base present on one chain of DNA is hydrogen bonded to its complementary base, cytosine present on the other chain. Similarly, adenine is hydrogen bonded to thymine on the other chain.
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How do you explain the absence of aldehyde group in the penta acetate of D-glucose?
The melting points and solubility of water of amino acids are generally higher than that of the corresponding halo acids. Explain.
Where does the water present in the egg go after the boiling the egg?
What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?
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?
Give one example each of (i) Reducing sugar and (ii) Non-reducing sugar.
Name the anomers of glucose.
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