I have a question about lipid hormones. So, I understand that they bind to receptors inside of the target cell to initiate a response. However, what I don't get is how they identify target cells if their target cells do not have cell surface membrane receptors. Do they just have to diffuse through cells until they find a cell with the hormone's specific receptor, or what? If it is that, then why aren't they a lot slower at bringing about a response than protein hormones? What is even the point of them being transported in the blood if they're going to do things the slow, indirect way anyway?