[Sodium-Potassium Pump]

Okay what does it mean when something looks like this:


         ____________
H3C-------------------CHO
       

What do the lines above and below the line connecting CH3 to CHO mean?

[Yggdrasil]

A triple bond?

H₃C-C=C-CHO

[Sodium-Potassium Pump]

There's only 2 carbon atoms listed.  So the carbon would have to have a triple bond and then 3 hydrogens attached. 

[Yggdrasil]

Sometimes carbons aren't explicit in a structure.  For example, see:

http://en.wikipedia.org/wiki/Alkyne#Terminal_and_internal_alkynes

They may have just written out the methyl explicitly (as some people do).

[macman104]

I'll assume your structure looks like this, if yes, that is what Yggdrasil has drawn for you.

[Sodium-Potassium Pump]

Hey thanks guys, this makes sense now.  It wasn't in our notes and I couldn't find it drawn like that in the textbook so I was confused.  Thanks again!!