00:02
So in this question, we're asked to determine the functional groups that make up each of the nucleotides and dna.
00:10
So the first base that we are going to talk about is adenine.
00:16
So if we look at adenine, we can see that there are lots of functional groups that are part of adenine.
00:23
The first one we're going to see right here is nh2.
00:26
And nh2 is amine.
00:30
So that is going to be our first functional group.
00:33
And then we can see here that there's a nitrogen and the nitrogen.
00:37
And nitrogen prefers to make three bonds.
00:39
So here, nitrogen is already in a double bond.
00:42
And a single bond here, so it has a total of three bonds.
00:44
So it doesn't need hydrogen.
00:46
But it's still considered a functional group.
00:48
And then again, there's another nitrogen here that has three bonds.
00:52
It doesn't need another hydrogen, as we saw from the previous nitrogen we looked at.
00:57
But it is also considered a functional group and then we have a nitrogen over here and this nitrogen is surrounded by three bonds as well.
01:06
It has a single bond on this side, a single bond on this side, and then it has a hydrogen here.
01:12
And then we have our last nitrogen here, which also has three bonds.
01:16
So these are all of the functional groups.
01:19
I'm just going to erase hydrogen because that doesn't count as a functional group...