00:01
Which of these is most likely to be true about a hormone that initiates a change from outside the cell? it is water soluble.
00:08
It can pass through the cell membrane.
00:11
It binds to a receptor and moves to the nucleus.
00:13
Or it is a steroid.
00:16
So you can split hormones into two broad classes.
00:19
Water soluble and lipid soluble.
00:22
So the lipid soluble ones are the steroid hormones.
00:26
So they are derived from cholesterol, so they are lipid -based.
00:30
So they are hydrophobic.
00:33
And as a result, they can diffuse through the membrane.
00:38
So they directly enter the cell.
00:41
Water soluble is going to be derived from something else.
00:43
Maybe a peptide, maybe it's a full protein.
00:47
So because these are proteins, they're not non -polar, so they're going to be hydrophobic.
00:55
Oops...