Answered

Which of the following are connected by hydrogen bonds?

AHydrogen to oxygen within a molecule of water
BPhosphate to sugar in a DNA molecule
CBase to sugar in a DNA molecule
DHydrogen to oxygen between two different molecules of water

Verified Answer :

kristicross

A hydrogen bond is the electrostatic attraction between polar molecules that occurs when ahydrogen (H) atom bound to a highly electronegative atom such as nitrogen (N), oxygen (O) or fluorine (F) experiences attraction to some other nearby highly electronegative atom.

maddyparis
DHydrogen to oxygen between two different molecules  of water

**See picture for clarification**
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