Which of the following structures is present in both prokaryotic and eukaryotic cells?<\/p>\n\n\n\n
A.
Cell membrane.<\/p>\n\n\n\n
B.
Golgi apparatus<\/p>\n\n\n\n
C.
Chloroplast<\/p>\n\n\n\n
D.
Endoplasmic reticulum.<\/p>\n\n\n\n
The Correct answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n The correct answer is A. Cell membrane<\/strong>.<\/p>\n\n\n\n Both prokaryotic<\/strong> and eukaryotic cells<\/strong> share several structural components, and the cell membrane<\/strong> is one of the most fundamental. The cell membrane, also known as the plasma membrane<\/strong>, serves as a barrier that regulates what enters and exits the cell. Its primary structure consists of a phospholipid bilayer<\/strong> with embedded proteins that aid in various cellular functions such as nutrient transport and cell signaling.<\/p>\n\n\n\n In prokaryotic cells<\/strong>, which include bacteria and archaea, the cell membrane is essential for maintaining the internal environment since these cells lack complex membrane-bound organelles. Prokaryotes do not have internal compartments such as a nucleus or other organelles like the Golgi apparatus<\/strong>, chloroplasts<\/strong>, or endoplasmic reticulum<\/strong>.<\/p>\n\n\n\n On the other hand, eukaryotic cells<\/strong>\u2014found in plants, animals, fungi, and protists\u2014are more complex. They also have a cell membrane but possess additional membrane-bound organelles like the nucleus<\/strong>, endoplasmic reticulum (ER)<\/strong>, Golgi apparatus<\/strong>, and chloroplasts<\/strong> (in plants and some protists). These organelles enable eukaryotic cells to compartmentalize functions, making them highly efficient at processes like protein synthesis and energy production.<\/p>\n\n\n\n However, prokaryotes can carry out all necessary life functions despite the absence of these organelles, thanks to their simpler structure. For example, while they lack an endoplasmic reticulum<\/strong> for protein synthesis, they rely on ribosomes<\/strong> in their cytoplasm.<\/p>\n\n\n\n The other options (Golgi apparatus<\/strong>, chloroplast<\/strong>, and endoplasmic reticulum<\/strong>) are only found in eukaryotic cells, making the cell membrane<\/strong> the correct answer as it is universally present in both types of cells. Without this shared structure, neither cell type could regulate its internal environment effectively, impacting cellular survival.<\/p>\n","protected":false},"excerpt":{"rendered":" Which of the following structures is present in both prokaryotic and eukaryotic cells? A.Cell membrane. B.Golgi apparatus C.Chloroplast D.Endoplasmic reticulum. The Correct answer and Explanation is: The correct answer is A. Cell membrane. Explanation: Both prokaryotic and eukaryotic cells share several structural components, and the cell membrane is one of the most fundamental. The cell […]<\/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-142822","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/142822","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=142822"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/142822\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=142822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=142822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=142822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Explanation:<\/h3>\n\n\n\n