What makes a nucleotide polar?

The hydroxyl groups of the sugar residues form hydrogen bonds with water. ... The backbone of alternating 3' pentose and phosphate groups of both DNA andRNA is highly polar. All the phosphodiester linkages in DNA and RNA strands have the same orientation along the chain (Fig.

Explanation:

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meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean