{"id":199800,"date":"2025-03-12T15:56:25","date_gmt":"2025-03-12T15:56:25","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=199800"},"modified":"2025-03-12T15:56:27","modified_gmt":"2025-03-12T15:56:27","slug":"the-movement-of-molecules-through-a-membrane-by-filtration-requires-__________blank","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/12\/the-movement-of-molecules-through-a-membrane-by-filtration-requires-__________blank\/","title":{"rendered":"The movement of molecules through a membrane by filtration requires __________Blank"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The movement of molecules through a membrane by filtration requires __________Blank.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Multiple Choice<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">atmospheric pressure<br>hydrostatic pressure<br>osmotic pressure<br>barometric pressure<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The correct answer is: <strong>hydrostatic pressure<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Filtration is the process by which molecules move through a membrane due to a pressure gradient. This movement occurs from an area of higher pressure to an area of lower pressure, and it does not require energy input (ATP) because it is a <strong>passive transport mechanism<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Understanding Hydrostatic Pressure in Filtration<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Hydrostatic pressure refers to the force exerted by a fluid against a membrane or a boundary. This force is typically generated by <strong>blood pressure<\/strong> in biological systems or by gravity in other filtration processes. In the human body, the filtration process mainly occurs in the kidneys, where <strong>blood pressure forces water and solutes through the glomerular membrane<\/strong> into the renal tubules for urine formation.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Why Not the Other Options?<\/strong><\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Atmospheric Pressure<\/strong> \u2013 This refers to the pressure exerted by the weight of the air above a surface. It does not play a direct role in membrane filtration within biological systems.<\/li>\n\n\n\n<li><strong>Osmotic Pressure<\/strong> \u2013 This is related to the movement of water across a membrane due to a difference in solute concentration. It is the driving force for <strong>osmosis<\/strong>, not filtration.<\/li>\n\n\n\n<li><strong>Barometric Pressure<\/strong> \u2013 This is another term for atmospheric pressure, which affects weather and altitude but does not drive filtration across membranes.<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Real-Life Example:<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In the <strong>kidneys<\/strong>, blood pressure creates hydrostatic pressure that pushes water, glucose, and ions through the capillary walls into the nephron, while larger molecules like proteins remain in the blood.<\/li>\n\n\n\n<li><strong>Coffee filtration<\/strong> also works on a similar principle, where gravity provides hydrostatic pressure to push water through coffee grounds.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thus, <strong>hydrostatic pressure is the key force behind filtration in both biological and mechanical systems.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The movement of molecules through a membrane by filtration requires __________Blank. Multiple Choice atmospheric pressurehydrostatic pressureosmotic pressurebarometric pressure The correct answer and explanation is : The correct answer is: hydrostatic pressure. Explanation: Filtration is the process by which molecules move through a membrane due to a pressure gradient. This movement occurs from an area of [&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-199800","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199800","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=199800"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199800\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=199800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=199800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=199800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}