B Cells are activated by<\/p>\n\n\n\n
a. Complement
b. Antibody
c. Interferon
d. Memory cells
e. Antigen<\/p>\n\n\n\n
The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n Correct Answer: e. Antigen<\/strong><\/p>\n\n\n\n Explanation:<\/strong><\/p>\n\n\n\n B cells, or B lymphocytes, are an essential component of the adaptive immune system, and their primary role is to recognize specific antigens and produce antibodies against them. The correct answer, “e. Antigen,”<\/strong> reflects this core function.<\/p>\n\n\n\n B cell activation begins when a B cell encounters its specific antigen<\/strong>. Each B cell has a unique B cell receptor (BCR) on its surface, which is essentially a membrane-bound form of an antibody. This receptor is highly specific and can bind to a unique epitope on an antigen. When a matching antigen binds to the BCR, the B cell internalizes the antigen, processes it, and presents fragments of it on its surface via MHC class II molecules.<\/p>\n\n\n\n For full activation<\/strong>, especially in T cell-dependent responses<\/strong>, a helper T cell (CD4\u207a) recognizes this antigen-MHC complex and provides additional stimulation through:<\/p>\n\n\n\n This additional “help” from T cells promotes:<\/p>\n\n\n\n In T cell-independent responses<\/strong>, certain antigens (like polysaccharides) can activate B cells without T cell help, usually producing a weaker, short-lived IgM response.<\/p>\n\n\n\n Thus, antigen<\/strong> is the primary trigger for B cell activation.<\/p>\n","protected":false},"excerpt":{"rendered":" B Cells are activated by a. Complementb. Antibodyc. Interferond. Memory cellse. Antigen The correct answer and explanation is : Correct Answer: e. Antigen Explanation: B cells, or B lymphocytes, are an essential component of the adaptive immune system, and their primary role is to recognize specific antigens and produce antibodies against them. The correct answer, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-210210","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=210210"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210210\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=210210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=210210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=210210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Activation of B Cells<\/strong><\/h3>\n\n\n\n
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Why the other options are incorrect:<\/strong><\/h3>\n\n\n\n
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