{"id":25838,"date":"2024-08-16T09:27:25","date_gmt":"2024-08-16T03:57:25","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=25838"},"modified":"2025-04-07T21:33:59","modified_gmt":"2025-04-07T16:03:59","slug":"prokaryotes","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/prokaryotes\/","title":{"rendered":"Prokaryotes"},"content":{"rendered":"<h2><strong>About Prokaryotes:<\/strong><\/h2>\n<ul>\n<li>They are <strong>single-celled organisms<\/strong> that <strong>lack a distinct nucleus<\/strong> and other membrane-bound organelles.\u00a0<\/li>\n<li><strong>Features<\/strong>\n<ul>\n<li><strong>Shape:<\/strong> They come in various shapes and sizes (0.5-5 \u00b5m), with four basic shapes being <strong>rod-like<\/strong> (bacillus), <strong>spherical<\/strong> (coccus), <strong>comma-shaped<\/strong> (vibrio), and <strong>spiral<\/strong> (spirillum).<\/li>\n<li><strong>Cell organisation:<\/strong> Prokaryotic cells have a basic structural organisation, which includes a cell wall (except in mycoplasma), cytoplasm, and a plasma membrane. However, they lack a well-defined nucleus.<\/li>\n<li><strong>Organelles:<\/strong> They <strong>lack membrane-bound organelles<\/strong>, except for ribosomes.<\/li>\n<li>They <strong>do have unique<\/strong> structures <strong>called mesosomes<\/strong>, which are extensions of the plasma membrane used for various functions.<\/li>\n<li><strong>Reproduction:<\/strong> Prokaryotic cells reproduce primarily <strong>through binary fission<\/strong>, a type of asexual reproduction.<\/li>\n<li><strong>DNA:<\/strong> Most prokaryotic cells have a single chromosome, which carries hereditary genes in the form of <a href=\"https:\/\/vajiramandravi.com\/quest-upsc-notes\/dna\/\" target=\"_blank\" rel=\"noopener noreferrer\" target=\"_blank\"><strong>DNA<\/strong><\/a>.<\/li>\n<\/ul>\n<\/li>\n<li>Prokaryotes include <strong>bacteria and \u201carchaea\u201d,<\/strong> another type of single-celled organism.<\/li>\n<li>These organisms are thought to be the <strong>oldest cell-based lifeforms<\/strong> on Earth.<\/li>\n<li><strong>Habitat:<\/strong> They thrive across the entire planet \u2013 on <strong>land and in water<\/strong>, from the tropics to the poles.<\/li>\n<li><strong>Ecological significance:<\/strong> They play a crucial role in the <strong>world\u2019s food chains<\/strong>, helping support the nutrient needs of fish humans catch and eat.<\/li>\n<\/ul>\n<p>Marine prokaryotes grow extremely fast \u2013 a process that emits a lot of carbon.<\/p>\n<hr \/>\n<h3>Q1: What are Eukaryotic Cells?<\/h3>\n<p>Eukaryotic cells are found in multi-cellular organisms such as protists, plants, animals, and fungi. They are more complex as compared to prokaryotic cells.<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/earths-oldest-tiniest-creatures-are-poised-to-be-climate-change-winners\/article68523779.ece\" target=\"_blank\" rel=\"nofollow noopener\">Earth\u2019s oldest, tiniest creatures are poised to be climate change winners<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Prokaryotes are single-celled organisms that lack a distinct nucleus and other membrane-bound organelles.<\/p>\n","protected":false},"author":5,"featured_media":25839,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-25838","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/25838","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=25838"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/25838\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/25839"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=25838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=25838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=25838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}