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Chemically, what is an important factor that enables enzymes to separate the strands of DNA without breaking them? HighLighter PopupUnderline Selected TextGreen Color HighlightOrange Color HighlightYellow Color HighlightBlue Color HighlightPink Color HighlightRemove Color Highlight A. Bonds between the strands are basic whereas bonds within the strands are acidic. B. Bonds between the strands require oxidation and bonds within the strands require reduction. C. There are fewer bonds between the strands than within the strands. D. Bonds between the strands are relatively weak hydrogen bonds, whereas bonds within the strands are relatively strong covalent bonds

Respuesta :

Oseni

Answer:

D. Bonds between the strands are relatively weak hydrogen bonds, whereas bonds within the strands are relatively strong covalent bonds

Explanation:

According to Watson and Crick hypothesis on the structure of the deoxyribo nucleic acid, the two double helix strands of the DNA are weakly associated with each other by hydrogen bond. Within the strands, the nucleotide bases are held together by covalent bonds.

The weak hydrogen bond ensures that the two strands are easily separated by the relevant enzyme during the process of replication or transcription. The relatively stronger covalent bond ensures that the nucleotide chains are not broken during the separation of the two strands.

The correct option is D.

luisvaschetto

Bonds between the strands are weak hydrogen bonds, while internal strand bonds are strong covalent bonds, thereby enabling enzymes to separate both strands without breaking them (option D).

  • Deoxyribonucleic acid (DNA) is a double helix molecule composed of two long opposite strands of nucleotides linked by hydrogen bonds.

  • In each DNA strand, consecutive nucleotides are linked by covalent phosphodiester bonds, which are generated by sharing electrons between atoms.

  • Hydrogen bonds between opposite DNA strands are categorized as strong non-covalent interactions, which serve to pair Thymine with Cytocine and Cytosine with Guanine.

In conclusion, bonds between the strands are weak hydrogen bonds, while internal strand bonds are strong covalent bonds, thereby enabling enzymes to separate both strands without breaking them (option D).

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