{"id":3903,"date":"2023-01-09T10:36:10","date_gmt":"2023-01-09T10:36:10","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3903"},"modified":"2025-09-22T06:04:10","modified_gmt":"2025-09-22T06:04:10","slug":"s-8-a-discovery-of-the-cell","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-8-a-discovery-of-the-cell\/","title":{"rendered":"s-8.a Discovery Of The Cell"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color has-huge-font-size\" style=\"color:#00056d;text-transform:uppercase\"><strong>Discovery Of The Cell<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAF5LrvVCzY\/N9yy373Sj0OHS_XRQSglCg\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAF5LrvVCzY&#x2F;N9yy373Sj0OHS_XRQSglCg&#x2F;watch?utm_content=DAF5LrvVCzY&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">discovery of the cell<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-8844a52ef1ee1cc1c8133e8d8f09a585\" style=\"color:#74008b;text-transform:capitalize\"><strong>key notes:<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"337\" height=\"400\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-41.png\" alt=\"\" class=\"wp-image-12114\" style=\"width:318px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-41.png 337w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-41-253x300.png 253w\" sizes=\"auto, (max-width: 337px) 100vw, 337px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-4faa42c968783b8576dc545ade01b42b\" style=\"color:#000060\"><strong>Introduction to the Cell<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The cell is the basic structural and functional unit of all living organisms.<\/li>\n\n\n\n<li>Cells are the building blocks of life, and the study of cells is called <strong>cell biology<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-bbdf6d3a9570b906b003c65b72ef0b1f\" style=\"color:#000060\"><strong>Early Observations<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>In the 17th century, <strong>Robert Hooke<\/strong>, an English scientist, was the first to discover cells.<\/li>\n\n\n\n<li>In <strong>1665<\/strong>, Hooke observed a thin slice of cork under a microscope and noticed box-like structures. He named them &#8220;cells&#8221; because they resembled the small rooms (cells) in a monastery.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-779757a92d9e8feac627a03c1f614060\" style=\"color:#000060\"><strong>The Development of the Microscope<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The discovery of the cell was made possible by the invention of the <strong>microscope<\/strong>.<\/li>\n\n\n\n<li><strong>Anton van Leeuwenhoek<\/strong>, a Dutch scientist, made significant improvements to the microscope in the late 1600s. He used it to observe tiny organisms in pond water, which he called &#8220;animalcules&#8221; (now known as microorganisms).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-aca2a8c947e3a91f495f5397dda68aa6\" style=\"color:#000060\"><strong>The Cell Theory<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\"><strong>Matthias Schleiden<\/strong> (1838) concluded that <strong>all plants are made of cells<\/strong>.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Theodor Schwann<\/strong> (1839) proposed that <strong>all animals are made of cells<\/strong>.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Rudolf Virchow<\/strong> (1855) added that <strong>all cells arise from pre-existing cells<\/strong>, completing the <strong>Cell Theory<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>All living organisms are made of one or more cells.<\/li>\n\n\n\n<li>The cell is the basic unit of structure and organization in organisms.<\/li>\n\n\n\n<li>All cells come from pre-existing cells.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-4d1a2eabee9291115f7847e2267d6cdd\" style=\"color:#000060\"><strong>Types of Cells<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Prokaryotic Cells<\/strong>: Simple cells without a nucleus (e.g., bacteria).<\/li>\n\n\n\n<li><strong>Eukaryotic Cells<\/strong>: Complex cells with a nucleus and organelles (e.g., plant and animal cells).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-6c6e1b19adfd6361e80e46332585f91b\" style=\"color:#000060\"><strong>Microscope Advancements<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Over time, microscopes became more advanced, allowing scientists to observe more detailed cell structures.<\/li>\n\n\n\n<li>The <strong>electron microscope<\/strong> was invented in the 20th century, providing even more detailed views of cells at a much higher magnification.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-5482a0e7549ced5418117b5ecb5c369d\" style=\"color:#000060\"><strong>Importance of Cell Discovery<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The discovery of cells led to a deeper understanding of how living organisms function.<\/li>\n\n\n\n<li>It paved the way for significant biological and medical advancements.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-866583819ade50caedb1c9378b1a81c0\" style=\"color:#000060\"><strong>Conclusion<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The discovery of the cell was a key moment in the history of biology, and it continues to influence scientific research in fields such as genetics, medicine, and biotechnology.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81649\/579\/397\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-84.png\" alt=\"\" class=\"wp-image-7694\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-84.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-84-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-84-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81647\/537\/704\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-83.png\" alt=\"\" class=\"wp-image-7699\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-83.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-83-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-83-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Discovery Of The Cell discovery of the cell by Delta publications key notes: Introduction to the Cell Early Observations The Development of the Microscope The Cell Theory Matthias Schleiden (1838) concluded that all plants are made of cells. Theodor Schwann (1839) proposed that all animals are made of cells. Rudolf Virchow (1855) added that all<a class=\"more-link\" href=\"https:\/\/8thclass.deltapublications.in\/index.php\/s-8-a-discovery-of-the-cell\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-8.a Discovery Of The Cell&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3903","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3903"}],"version-history":[{"count":19,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3903\/revisions"}],"predecessor-version":[{"id":21534,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3903\/revisions\/21534"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}