Which of the following best describes the difference in the way B...

Question

Which of the following best describes the difference in the way B cells and cytotoxic T cells deal with invaders?
a. B cells confer active immunity; T cells confer passive immunity.
b. B cells send out antibodies to attack; certain T cells can do the attacking themselves.
c. T cells handle the primary immune response; B cells handle the secondary response.
d. B cells are responsible for the cell-mediated immune response; T cells are responsible for the humoral immune response.

Accepted Answer

Welcome back everyone. Here's our next problem. It says B cells are involved in blank response while t cells are involved in blank response. So we can recall that B cells and T cells are aspects of the immune system and the immune system has kind of two broad categories of response. And we can look at our answer choices just to get a sense of what categories we're looking at and we see that among our answer choices. We have Hugh moral, cell mediated, cell mediated and in eight. So let's kind of look think through our categories of the immune system to keep track of what we're looking for in terms of B cells and T cells. So we have kind of two broad categories here and I'm gonna put them up. We have the innate immune system and we have the adaptive immune system and we know that innate is one of our answer choices. And when we look at the adaptive human system it has to sort of broad categories the hue, moral and the cell mediated system. So there we've got all of the terms that are in our answer choices. So let's just briefly recall what these are. The innate immune system is sort of the older, more primitive immune system. It reacts to common and broad categories of pathogen involving specific cells to destroy the invaders and the inflammatory response which helps provide a physical barrier to further germs coming in as well as promoting healing in the area and then the adaptive immune system evolved later on it's that system that is highly specific to each particular antigen and it has sort of two parts the hue moral aspect which is antibody mediated. Those antibodies are secreted by B cells. So there we have our mention of the B cells were looking for and the hue moral antibody response. Humor comes from the old word of humors. The bodily humors refers to things found in bodily fluids like circulating in the blood. Then the second part of the adaptive system is the cell mediated response which is that part of the response that it does not involve antibodies. So involves the activation of fado sites site a toxic T cells and cytokines. So that we've got our c cells associated with cell mediated immune response. So when we look through our answers we're going to match B cells with the hue moral response. So we're looking for our first since b cells our first our first choice to be Hugh moral. And then we see that in choice A. And choice D. So we can eliminate choice B. Which has an innate response. First we know that B. And T cells are not part of that more generic innate response. So B. Is incorrect. Choice C. Has cell mediated as the first answer. But we see that it's B cells are involved in the hue moral response. So Choice C. Is not correct. So we have B cells matched with Hugh moral response. T cells as part of the cell mediated response. So we see that indeed in choice A. The second choices cell mediated, so that's going to be our correct answer, whereas Choice D. Has T cells being involved in the innate response and that is not correct. So Choice D. Is not our answer here. So again, when we look at our question, B cells are involved in choice A hue moral response. While T cells are involved in the cell mediated response, hope to see you in the next video.

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