{"id":3829,"date":"2023-01-09T10:29:44","date_gmt":"2023-01-09T10:29:44","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3829"},"modified":"2025-08-21T11:56:14","modified_gmt":"2025-08-21T11:56:14","slug":"s-2-c-microorganisms-and-us","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-2-c-microorganisms-and-us\/","title":{"rendered":"s-2.c Microorganisms And Us"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Microorganisms And Us<\/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\/DAF3lHgv7Zo\/raa3b8XEHI51ClQUS7vIxg\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAF3lHgv7Zo&#x2F;raa3b8XEHI51ClQUS7vIxg&#x2F;watch?utm_content=DAF3lHgv7Zo&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">micro organisms<\/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-665588061999e61de138a3722b67a7db\" style=\"color:#74008b\"><strong>key notes<\/strong> :<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-ed04099168fb14364fdeafc544012580\" style=\"color:#000060\">\u2705 <strong>What are Microorganisms?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Microorganisms (or microbes) are tiny living organisms that are <strong>too small to be seen with the naked eye<\/strong>.<\/li>\n\n\n\n<li>They can be seen only under a <strong>microscope<\/strong>.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Untitled-design-29-1024x579.png\" alt=\"\" class=\"wp-image-20866\" style=\"width:426px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Untitled-design-29-1024x579.png 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Untitled-design-29-300x170.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Untitled-design-29-768x434.png 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Untitled-design-29.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\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-094789134db31299b3e50af7f72f8005\" style=\"color:#000060\">\ud83d\udd2c <strong>Types of Microorganisms<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"920\" height=\"520\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-1.png\" alt=\"\" class=\"wp-image-20871\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-1.png 920w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-1-300x170.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-1-768x434.png 768w\" sizes=\"auto, (max-width: 920px) 100vw, 920px\" \/><\/figure>\n\n\n\n<ol class=\"wp-block-list has-large-font-size\">\n<li><strong>Bacteria<\/strong> \u2013 Single-celled organisms, found everywhere.<\/li>\n\n\n\n<li><strong>Fungi<\/strong> \u2013 Includes molds and yeasts.<\/li>\n\n\n\n<li><strong>Protozoa<\/strong> \u2013 Single-celled, animal-like organisms (e.g., amoeba).<\/li>\n\n\n\n<li><strong>Algae<\/strong> \u2013 Simple, plant-like organisms that live in water.<\/li>\n\n\n\n<li><strong>Viruses<\/strong> \u2013 Smaller than bacteria; can reproduce only inside living cells.<\/li>\n<\/ol>\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-cdfad346bb859212ae35a47bc978ae90\" style=\"color:#000060\">\ud83d\udca1 <strong>Where are Microorganisms Found?<\/strong><\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-2-1024x579.png\" alt=\"\" class=\"wp-image-20872\" style=\"width:341px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-2-1024x579.png 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-2-300x170.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-2-768x434.png 768w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-2.png 1104w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>In <strong>air, water, soil<\/strong>, and <strong>inside<\/strong> and <strong>outside<\/strong> of our bodies.<\/li>\n\n\n\n<li>Can live in <strong>extreme conditions<\/strong> like hot springs, icy regions, deserts, and deep oceans.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"920\" height=\"520\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-4.png\" alt=\"\" class=\"wp-image-20873\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-4.png 920w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-4-300x170.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-4-768x434.png 768w\" sizes=\"auto, (max-width: 920px) 100vw, 920px\" \/><\/figure>\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-314312912bfb88df07620e47a5d7710d\" style=\"color:#000060\">\ud83d\ude0a <strong>Useful Microorganisms<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1472\" height=\"832\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-7.png\" alt=\"\" class=\"wp-image-20878\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-7.png 1472w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-7-300x170.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-7-1024x579.png 1024w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2025\/07\/Bacteria-7-768x434.png 768w\" sizes=\"auto, (max-width: 1472px) 100vw, 1472px\" \/><\/figure>\n\n\n\n<ol class=\"wp-block-list has-large-font-size\">\n<li><strong>In Food Industry:<\/strong>\n<ul class=\"wp-block-list\">\n<li><em>Lactobacillus<\/em> helps in making <strong>curd<\/strong>.<\/li>\n\n\n\n<li>Yeast is used in <strong>baking<\/strong> (makes dough rise).<\/li>\n\n\n\n<li>Fermentation by yeast helps in <strong>alcohol production<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>In Medicine:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Some bacteria produce <strong>antibiotics<\/strong> (e.g., <em>Penicillium<\/em> makes penicillin).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>In Agriculture:<\/strong>\n<ul class=\"wp-block-list\">\n<li><em>Rhizobium<\/em> bacteria fix <strong>nitrogen<\/strong> in the soil to help plants grow.<\/li>\n\n\n\n<li>Microbes help in <strong>composting<\/strong> (decomposing organic waste).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>In Cleaning Environment:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Decompose dead plants and animals into simpler substances.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\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-ba6e6cf627041ab68b2f6018000b9e2d\" style=\"color:#000060\">\ud83d\ude37 <strong>Harmful Microorganisms<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list has-large-font-size\">\n<li><strong>Cause Diseases<\/strong> in humans, animals, and plants:\n<ul class=\"wp-block-list\">\n<li>Human diseases: <strong>Tuberculosis, Typhoid, Cholera, COVID-19<\/strong><\/li>\n\n\n\n<li>Plant diseases: <strong>Rust in wheat, Citrus canker<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Food Spoilage:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Microbes can spoil food by growing on it and making it unsafe to eat.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\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-83a04b0fa50f67edaf03ca324710ccb2\" style=\"color:#000060\">\ud83e\uddf4 <strong>Preservation of Food<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>To prevent microbial growth, food can be:\n<ul class=\"wp-block-list\">\n<li><strong>Refrigerated or frozen<\/strong><\/li>\n\n\n\n<li><strong>Dried<\/strong><\/li>\n\n\n\n<li><strong>Salted or pickled<\/strong><\/li>\n\n\n\n<li><strong>Packed in air-tight containers<\/strong><\/li>\n\n\n\n<li><strong>Preserved with chemicals<\/strong> (e.g., sodium benzoate)<\/li>\n<\/ul>\n<\/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-60ddab6736ef86ffa245ff3df01a5abf\" style=\"color:#000060\">\ud83d\udc89 <strong>Vaccination<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Vaccines are <strong>weakened or dead microbes<\/strong> that help our body build immunity against diseases.<\/li>\n\n\n\n<li>Examples: <strong>Polio vaccine, COVID-19 vaccine, Measles vaccine<\/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-78b826ddc1e4bd66ed449cade714d870\" style=\"color:#000060\">\ud83e\uddeb <strong>Nitrogen Cycle<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Microorganisms play a vital role in the <strong>nitrogen cycle<\/strong>, converting atmospheric nitrogen into forms usable by plants.<\/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-75fa718c4330949ecbbfbdacdaf0c547\" style=\"color:#000060\"><strong>\ud83d\udccc Summary<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Microorganisms can be <strong>both helpful and harmful<\/strong>.<\/li>\n\n\n\n<li>They play important roles in <strong>food production<\/strong>, <strong>healthcare<\/strong>, <strong>agriculture<\/strong>, and <strong>environmental balance<\/strong>.<\/li>\n\n\n\n<li>Good hygiene, food preservation, and <strong>vaccination<\/strong> help protect us from harmful microbes.<\/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\/75879\/433\/759\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-48.png\" alt=\"\" class=\"wp-image-7574\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-48.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-48-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-48-150x150.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 is-style-default\"><a href=\"https:\/\/wordwall.net\/play\/75913\/460\/277\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-47.png\" alt=\"\" class=\"wp-image-7575\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-47.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-47-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-47-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Microorganisms And Us micro organisms by Delta publications key notes : \u2705 What are Microorganisms? \ud83d\udd2c Types of Microorganisms \ud83d\udca1 Where are Microorganisms Found? \ud83d\ude0a Useful Microorganisms \ud83d\ude37 Harmful Microorganisms \ud83e\uddf4 Preservation of Food \ud83d\udc89 Vaccination \ud83e\uddeb Nitrogen Cycle \ud83d\udccc Summary Let&#8217;s practice!<\/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-3829","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\/3829","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=3829"}],"version-history":[{"count":33,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3829\/revisions"}],"predecessor-version":[{"id":21299,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3829\/revisions\/21299"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}