InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Name the nitrogenous bases present in DNA? |
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Answer» Adenine , Guanine ,Thymine and cytosine. |
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| 2. |
What is DNA finger printing? Explain its significance in medical science. |
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Answer» Every person has own fingerprints . These occurs at the tip of the fingers , likewise a sequence of bases of DNA is also uniquefor the person and information regarding this is called DNA fingerprinting been used for identification of criminals. |
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| 3. |
Write the important functional difference between DNA and RNA . |
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Answer» Functions of DNA – DNA maintains the identity of different species of organisms over millions of years . DNA is a chemical basis of heredity. RNA—Protein synthesis |
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| 4. |
What is the difference between a nucleoside and a nucleotide? |
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Answer» A nucleoside is formed by the attachment of a base to position of sugar. Nucleoside = Sugar + Base A nucleotide is formed by all the three basic components of nucleic acids (i.e., pentose sugar, phosphoric acid, and base). Nucleotide = Sugar + Base + Phosphoric acid |
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| 5. |
“The two strands in DNA are not identical but are complementary’’. Explain. |
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Answer» In the helical structure of DNA, the two strands are held together by hydrogen bonds between specific pairs of bases. Cytosine forms hydrogen bond with guanine, while adenine forms hydrogen bond with thymine. As a result, the two strands are complementary to each other. |
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| 6. |
Name the nitrogenous base which is present in RNA but not in DNA? To which class does it belong? |
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Answer» Uracil. It belongs to Pyrimidines. |
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| 7. |
Name the nitrogenous base which is present in DNA but not in RNA?Name the corresponding base with which it pairs. |
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Answer» Thymine.It pairs with Adenine. |
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