00:01
This question presents us with a diagram that shows us two molecules that are being joined together, and we see that what happens after they are joined together is that we produce one larger molecule.
00:14
So this is going to be some sort of synthesis reaction, right? now, the question is asking us essentially to choose the statements that accurately describe what is going on here.
00:26
So the first statement is saying that this is an example of protein.
00:32
Being formed.
00:34
So is this true or not? well we see that there is a peptide bond that forms.
00:47
Okay, we see that an oh -h on the one molecule and then the h on the other are going to be removed, right? that's why they're in blue.
00:58
So we'll kind of just write it out like that to show that they are removed to form water and they're lost from the two molecules, but that's actually what's going to allow them to join together, is the loss of this water.
01:12
And we also see that there's this linkage of the o, c, n, right? so there's the o, c, linked to the n, which is linked to the h.
01:24
So this linkage right here, specifically that's c to n, that is an indication that, a, we have a peptide bond there, right? because this is what they kind of circle on the show saying that's the peptide bond okay that makes sense because both of these are going to be linked to other carbons but this cita end is the peptide bond but that is an amide linkage all right so knowing all these facts let's go and take a look at our answer choices here and figure out which ones are correct so the first one proteins are being formed are proteins being synthesized here well we're forming a pepice peptide bond, we have an amide linkage, we lose water, this is an example of proteins being formed.
02:15
So a is true.
02:18
What about b? the monomers are amino acids.
02:21
So what we have drawn out, can we find this alpha carbon, the central carbon? yep, absolutely.
02:27
Do we see the n terminus of each? yep.
02:32
Do we see the c terminus? yep, the c -o -o -h? yep, that's the c -terminus.
02:36
Okay.
02:37
The n -terminus is nh2.
02:39
So the alpha carbon, does it have an r, an r group on it? the side chain? well, the side chain is actually the h.
02:47
Okay, so this is telling us that both the amino acids are glycines, but they are amino acids.
02:52
So that is also correct...