# Which atoms in a given amino acid are able to form hydrogen bonds with water?

Can anyone help me with this question I have tried everything. I know hydrogen bonding is with $\ce{F}$, $\ce{O}$, or $\ce{N}$, but every time I select those is says it's wrong.

• Which part of the question are you getting wrong? Top, bottom, or both? I'm guessing that if it's the bottom, then you need to include H in your list of H-bonding atoms to choose from. – jerepierre Sep 22 '14 at 23:06