00:01
Which of these statements about saturated fatty acids is true? a, they are the predominant fat in corn oil.
00:10
B, they are the principal molecules in lard and butter.
00:14
C, they are usually liquid at room temperature.
00:17
D, they have double bonds between the carbon atoms of the fatty acids.
00:21
Or e, they are usually produced by plants.
00:24
Okay, so saturated fatty acids are as opposed to unsaturated.
00:28
And this is to do with the chains.
00:33
So say we have these chains here of carbons.
00:41
And this chain i've just drawn here is saturated because it has the maximum number of hydrogen ions that the carbons can bond to.
00:52
So it's all single bonds.
00:54
That makes it saturated.
00:55
An unsaturated one would have a double bond, and because a carbon can only have four bonds, each of these carbons would have to lose a hydrogen, and that would make it unsaturated.
01:08
So, let's look at these...