00:01
So the three most abundant hexoses, three most abundant hexoses are, well, i'm going to pause here a little bit, just so you can try and quiz yourself for this.
00:29
But if not, i'm going to go over it.
00:32
Keep in mind, this is a fact that you want to memorize.
00:39
There's no other way about it other than to memorize this fact.
00:43
So pause the video and try to answer this yourself.
00:48
It's not, keep watching.
00:52
So the three most abundant hexoses are de -glucose, d -glectose, and all three of these are found in our metabolism.
01:40
Okay, so moving on the side, second part of the question, we need to determine which ones are aldohexoses and which ones are keto hexoses.
01:56
So in order to answer this, we need to know the structures of our three most abundant hexoses.
02:05
So let's start with de -glucose.
02:15
This guy is going to look something like this.
02:31
K -h -2 -o -8 we have o -h -h -h -h -8 -8 -8 -o -8 and before we move on there are some standard things i would just like to cover so each of these crossing points is a carbon.
03:19
If you count through this, there's six carbons.
03:21
And the reason why it is de -glucose is because this oh group right here is on the right side.
03:30
So that means this carbon right here.
03:34
Let me not write it there.
03:35
It's no space.
03:37
But this carbon here is known as the penn ultimate carbon.
03:49
And it is the second to last carbon.
03:52
This being the last carbon.
04:02
So knowing that, let's move on to de -glaxose.
04:18
Okay, so this one is going to look like this.
04:38
2 -o -h.
04:42
Um, okay, oh, h, hydrogen, droxyl group, and hydrogen, hydrogen, hydrogen, and hydroxyl group, and hydroxyl group, and joxigroup and the hydrogen...