{"id":270936,"date":"2025-07-25T12:34:31","date_gmt":"2025-07-25T12:34:31","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=270936"},"modified":"2025-07-25T12:34:33","modified_gmt":"2025-07-25T12:34:33","slug":"microvillus-plasma-membrane-centrosome-microtubule-cilium-microfilament-microtubule-centrosome-plasma-membrane-microvillus-microfilament","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/25\/microvillus-plasma-membrane-centrosome-microtubule-cilium-microfilament-microtubule-centrosome-plasma-membrane-microvillus-microfilament\/","title":{"rendered":"Microvillus Plasma membrane Centrosome Microtubule Cilium Microfilament Microtubule Centrosome Plasma membrane Microvillus Microfilament"},"content":{"rendered":"\n<p>Microvillus Plasma membrane Centrosome Microtubule Cilium Microfilament Microtubule Centrosome Plasma membrane Microvillus Microfilament<br>Label the structures of the plasma membrane and cytoskeleton. Microvillus Plasma membrane Centrosome Microtubule Cilium Microfilament Microtubule Centrosome Plasma membrane Microvillus Microfilament<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/image-688.png\" alt=\"\" class=\"wp-image-270937\"\/><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>Based on the diagram provided, here are the correct labels for the indicated structures:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cilium:<\/strong>\u00a0The long, hair-like projection extending from the cell surface.<\/li>\n\n\n\n<li><strong>Microvillus:<\/strong>\u00a0One of the short, finger-like projections that increase the cell&#8217;s surface area.<\/li>\n\n\n\n<li><strong>Microfilament:<\/strong>\u00a0The thin protein fiber located just beneath the plasma membrane and forming the core of the microvilli.<\/li>\n\n\n\n<li><strong>Microtubule:<\/strong>\u00a0The thick, hollow tube-like protein filament within the cytoplasm.<\/li>\n\n\n\n<li><strong>Centrosome:<\/strong>\u00a0The organelle located near the nucleus that organizes microtubules.<\/li>\n\n\n\n<li><strong>Plasma membrane:<\/strong>\u00a0The outer boundary of the cell.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation of the Plasma Membrane and Cytoskeleton<\/h3>\n\n\n\n<p>The provided diagram illustrates key components of an animal cell&#8217;s outer boundary and internal framework. The&nbsp;<strong>plasma membrane<\/strong>&nbsp;is the cell&#8217;s essential outer layer. It functions as a selective barrier, meticulously controlling which substances enter and leave the cell. This regulation is crucial for maintaining a stable internal environment, or homeostasis.<\/p>\n\n\n\n<p>Internal to the plasma membrane is the&nbsp;<strong>cytoskeleton<\/strong>, a dynamic network of protein filaments that provides structural support, determines cell shape, and facilitates movement. The diagram highlights several cytoskeletal elements.&nbsp;<strong>Microfilaments<\/strong>&nbsp;are the thinnest of these filaments, composed of the protein actin. They form a supportive mesh just under the plasma membrane and are responsible for cell motility, changes in cell shape, and muscle contraction. As shown, they provide the structural core for&nbsp;<strong>microvilli<\/strong>, which are short, non-motile projections that dramatically increase the cell&#8217;s surface area for absorption.<\/p>\n\n\n\n<p><strong>Microtubules<\/strong>&nbsp;are the largest components of the cytoskeleton. These hollow tubes, made of tubulin protein, act like highways within the cell, providing tracks along which organelles and vesicles can move. They also play a critical role in cell division by forming the mitotic spindle. Microtubules are organized by the&nbsp;<strong>centrosome<\/strong>, which is the primary microtubule-organizing center in animal cells. The centrosome is typically located near the nucleus and contains a pair of centrioles.<\/p>\n\n\n\n<p>Finally, some microtubules assemble into more complex structures like&nbsp;<strong>cilia<\/strong>. Cilia are long, hair-like projections that can move in a coordinated, wave-like fashion. Their function is either to propel the entire cell through a fluid or to move fluid and particles across the cell&#8217;s surface, as seen in the respiratory tract.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner6-2009.jpeg\" alt=\"\" class=\"wp-image-270939\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Microvillus Plasma membrane Centrosome Microtubule Cilium Microfilament Microtubule Centrosome Plasma membrane Microvillus MicrofilamentLabel the structures of the plasma membrane and cytoskeleton. Microvillus Plasma membrane Centrosome Microtubule Cilium Microfilament Microtubule Centrosome Plasma membrane Microvillus Microfilament The Correct Answer and Explanation is: Based on the diagram provided, here are the correct labels for the indicated structures: Explanation [&hellip;]<\/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-270936","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/270936","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=270936"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/270936\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=270936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=270936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=270936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}