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Biology : asked on 5926001196
 31.12.2020

Chemically, what is an important factor that enables enzymes to separate the strands of DNA without breaking them?
A- Bonds between the strands are basic whereas bonds within the strands are acidic
B- Bonds between the strands require oxidation the 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 bond’s within the strands are relatively strong covalent bonds.

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27.11.2022, solved by verified expert
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Bibin (Bibi) P B
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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.

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