Steroid hormones, like most lipid-soluble signaling molecules, are processed directly. How does the absence of a signal transduction cascade in the processing of steroid hormones affect the cellular response that is possible?

Video transcript

Hello everyone. And in today's video we have the following problem. So how does the signaling molecule outside of the cell trigger a false relation cascade inside of the cell. So remember that these signaling molecules tend to not enter the cell. Instead they use receptors to amplify the signal. So now that we know this, let's go over answer choices in order to solve the problem. Beginning by answer choice C. It releases signals that trigger force for elation. So what is wrong with this answer? Well, a single molecule cannot simply release signals on their own. These molecules are not able to do this. So we're going to cancel this out. Remember that these molecules need some type of receptor in order to rely or amplify the signal. Now we have deep it changes its form to be premium ble to the plasma membrane. The only things that are really premium all to the plasma membrane are very small non charged molecules. So this is not going to be an answer choice that we can actually select and we're going to cancel it out. Then we have a it enters the cell through a protein channel. These protein channels are usually used for water or small ions. They're going to they're not going to serve for a larger signaling molecule. So we're going to cancel it out. And it all leaves us with answer choice B. It enters it binds to the receptor causing it to change confirmation. Which is what we see here. This change in confirmation is going to trigger the actual cascade that causes phosphor relation leading to certain just results inside of the cell. So that is going to be our final answer of how this phosphor relation cascade is initiated and find on the end of the video. I really hope this video helped you and I hope to see you on the next one.