Problem 3 Distinguish between the location... [FREE SOLUTION]

Chapter 9: Problem 3

Distinguish between the locations of the phosphodiester bonds and the hydrogen bonds in a DNA molecule.

Short Answer

Expert verified

In a DNA molecule, phosphodiester bonds create the DNA's backbone, linking the deoxyribose sugars and phosphate groups of each nucleotide together. On the other hand, hydrogen bonds connect complementary base pairs in the center of the molecule, maintaining the double helix structure.

Step by step solution

Identify the Location of Phosphodiester Bonds

Phosphodiester bonds exist between the phosphate group and the deoxyribose sugar in the DNA backbone. These covalent bonds form the sugar-phosphate backbone of the DNA, connecting the 3rd carbon atom in the deoxyribose sugar of one nucleotide to the 5th carbon atom in the deoxyribose sugar of the next nucleotide.

Identify the Location of Hydrogen Bonds

Hydrogen bonds in a DNA molecule occur between the nitrogenous bases of the two DNA strands. Adenine (A) forms two hydrogen bonds with thymine (T), and Guanine (G) forms three hydrogen bonds with cytosine (C). These bonds hold the two DNA strands together, forming a double helix structure.

Distinguish Between Phosphodiester and Hydrogen Bonds

The phosphodiester bonds form a strong structural bond within each individual strand of the DNA, creating the backbone, while the hydrogen bonds create attraction between the two strands of DNA but are weaker, allowing them to be broken and reformed during processes like DNA replication and transcription.

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91影视

Distinguish between the locations of the phosphodiester bonds and the hydrogen bonds in a DNA molecule.

Short Answer

Step by step solution

Identify the Location of Phosphodiester Bonds

Identify the Location of Hydrogen Bonds

Distinguish Between Phosphodiester and Hydrogen Bonds

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