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Oa) The 5 &-subunit of - the TCR The 5 C-subunit - the IL-2 receptor An inhibitory receptor = that turns d) The off T cell ligand for functions: ICAM found in t...

Question

Oa) The 5 &-subunit of - the TCR The 5 C-subunit - the IL-2 receptor An inhibitory receptor = that turns d) The off T cell ligand for functions: ICAM found in the supramo lecular Question - activation . 14 (1 point) complex: Polarizing = cytokines secreted from pAPC direct = The - type which of the cytokines following? produced by an Positive effector Th cell; selestion in the thymus Passage = Mature ` cells into the None = thymus- of the above:What is ' CD25?

Oa) The 5 &-subunit of - the TCR The 5 C-subunit - the IL-2 receptor An inhibitory receptor = that turns d) The off T cell ligand for functions: ICAM found in the supramo lecular Question - activation . 14 (1 point) complex: Polarizing = cytokines secreted from pAPC direct = The - type which of the cytokines following? produced by an Positive effector Th cell; selestion in the thymus Passage = Mature ` cells into the None = thymus- of the above: What is ' CD25?



Answers

The mechanism to activate an immune cell to make an antibody involves signal transduction using tyrosine kinases. Place in order the following series of steps to activate this function. (1) The activated receptor phosphorylates cytoplasmic proteins. (2) Conformational change occurs in the receptor tyrosine kinase. (3) Cytoplasmic protein crosses the nuclear membrane to activate genes. (4) An immune hormone signals the immune cell. (5) Activation of protein kinase site(s) adds phosphates to the receptor to activate it. a. 2,1,4,3,5 b. 5,3,4,2,1 c. 4,1,5,2,3 d. 4,2,5,1,3 e. 2,5,3,4,1

Or this question. We need to figure out what the T cell receptor off to help her t so binds to. So the helper T cell is associated with the specific type of MHC molecule that is and made she to. So this means that the TC are of the helper t so will buy into antigens presented by MHC two molecules, which is our answer.

So the first step that would take place is an immune hormone. Yeah, would signal the immune cell. And then the next thing to take places. Informational change would occur in the receptor, However, seeing kindness and the next, the activation of the protein kindness site would add false fee to the receptor so it could be activated. Yeah. And then the activated receptor would fuss for aly the cytoplasmic proteins. And then the last step would be the cytoplasmic routine crosses the nuclear membrane Yeah. To activate genes.

It's amount T cells in T cell receptors, and it's basically asking us what T cell receptors and T cells do in the immune system. And in this question, we have to choose the true statement out of a series of statements. And obviously most of them are false. The true statement is E, and he is basically just what do you know that T cells air really important in attacking virus infected cells? So cited toxic T cells. One of their tests is to attack body cells that have been infected by viruses. So side of toxic T cells attack and kill body cells that have been infected by viruses. And that's important component of what they do. So that's the correct answer. That's the true statement in this list of statements. So let's just very briefly run through the other statements which are false and, uh, well, just briefly mentioned how they're false. So, um, a mentions something about, um, the importance of tea T cell receptors in human RL immunity. In fact, it's B cells and the receptors on B cells that are important in human RL immunity. So that's just got things switched around a little bit. Um, let her be, um, talks about what those receptors are made of. Just remember that receptors are proteins. They're not, uh, carbohydrates are fats or something else. The receptors here proteins. So course that statement was incorrect. The, um is asking us about, um, sort of where T cells get there, uh, get their ability to attack different kinds of cells and their pre adapted, um, So they come the or they develop. And they developed with the ability to recognize one kind of anti gen one kind of engine for each T cell. And this means that you don't have to have encountered ah, pathogens before your body can respond to it so you can respond to a pathogen even if your body is naive. Meaning that is not encountered it for that's an important point about the immune system is that it doesn't have to sit around and wait to be attacked, and then and then sort of leader on develop the ability to respond again. Um, it is set up to respond Teoh new pathogens. And then finally, just to sort of clarify Here you talk this this woman asked about plasma cells. Remember that plasma cells are a type of B cell and plasma cells, um, make antibodies in pursuit of a long chain to get to the point where they're making antibodies. But, um, plasma cells or B cells, they're not t so.

So when it comes to lymphocytes being able to recognize antigens its first going to begin with, let's say it's a piece of bacteria that's going to be swallowed up. So think of how when we put food or mouth we swallow it swallow up, that's what's going to happen to this bacteria. Some start over here in the top left. So bacteria swallowed up. Then we're going to move over to the next step. So it's going to happen is the bacteria is going to be degraded down so that it's going to be begin to be broken down and it's going to release antigens. So we're breaking down that bacteria now. So think of it as let's say it was a square before now it's going to be little pieces that make up that square so it's being broken down. Next we're going to get into and these antigens are going to be binding to proteins. So antigens are showing up now from the previous step on the cell surface. Yeah, so they're broken down and then there being presented. Next step is going to be the interaction of a pC with the lymphocyte. So what's happening here is that a pC is going to present the anti gin to the T cell and then the T cell receptor is going to be recognizing that anti jen. So it's like you're presenting it so that they can see each other and be able to recognize each other again. Think of when you've met somebody and let's say once you meet them and see them next time you see them, you'll be able to recognize them again and that's what's happening here next. What's happening is the T cell is going to be activated? So it's basically like an on switch that is being turned on here. And then, lastly, the helper T cells will be there. So helper T cells are made and they're activated and ready to begin their tasks.


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