Explain the difference between an aldose and a ketose.

Video transcript

Welcome back everyone to another video which of the following statements correctly differentiates ketosis from al doses were given four answer choices. Let's begin analyzing them. The first one states that ketosis contain the carbo group on the first carbon atom. While al doses have the carbel group on the second carbon atom. And this is not really correct because if we visualize the fissure projections of those, well, essentially an aldose, it would have an aldehyde group at carbon number one, right? In this case, we can have carbon bonded to another carbon if that carbon was carbon number two. Well, essentially it would have two carbon carbon bonds and that would have to be a key zone which essentially must be internal. If we draw carbonel on carbon number two, we can clearly see that this is possible, right? So we have an dose which has an aldehyde that carbon number one. And we have a ketose which has carbonyl at carbon two or below, right? Depending on how many carbons we have. So the first statement is incorrect. Now B states ketosis have an internal carbonel group. That's correct. And L doses have a terminal carbonel group which is also correct terminal essentially means that it is at the end of the chain and internal means that it is not the first and not the final carbon within our chain. So B is the correct statement, we can label it as the correct answer. And now C ketosis are complex sugars with a ketone group. While aosis are simple sugars with an aldehyde group, right? This is not necessarily correct because the complexity of the sugar doesn't depend on which functional group we are considering, right. The key difference is the type of carbona group, ketone for ketosis and aldehyde for L doses. So C is not correct and D all of the above it is also incorrect because as we can see only statement B is correct and that would be our final answer. Thank you for watching.