B\u00e0i 2 (trang 18 SGK Sinh h\u1ecdc 12):\u00a0Op\u00earon l\u00e0 g\u00ec? Tr\u00ecnh b\u00e0y c\u1ea5u tr\u00fac op\u00earon Lac \u1edf E.coli<\/strong><\/p>\nL\u1eddi gi\u1ea3i:<\/b><\/p>\n
Tr\u00ean ph\u00e2n t\u1eed ADN c\u1ee7a vi khu\u1ea9n, c\u00e1c gen c\u1ea5u tr\u00fac c\u00f3 li\u00ean quan v\u1ec1 ch\u1ee9c n\u0103ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 li\u1ec1n nhau th\u00e0nh t\u1eebng c\u1ee5m c\u00f3 chung m\u1ed9t c\u01a1 ch\u1ebf \u0111i\u1ec1u h\u00f2a \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1ed9t op\u00earon.<\/p>\n
C\u1ea5u tr\u00fac op\u00earon Lac \u1edf E.coli bao g\u1ed3m:<\/p>\n
Z, Y, A: C\u00e1c gen c\u1ea5u tr\u00fac ki\u1ec3m so\u00e1t t\u1ed5ng h\u1ee3p c\u00e1c enzim tham gia v\u00e0o c\u00e1c ph\u1ea3n \u1ee9ng ph\u00e2n gi\u1ea3i \u0111\u01b0\u1eddng lact\u00f4z\u01a1 trong m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho t\u1ebf b\u00e0o.<\/p>\n
– O (operator): V\u00f9ng v\u1eadn h\u00e0nh l\u00e0 tr\u00ecnh t\u1ef1 nucleotit \u0111\u1eb7c bi\u1ec7t t\u1ea1i \u0111\u00f3 protein \u1ee9c ch\u1ebf c\u00f3 th\u1ec3 li\u00ean k\u1ebft l\u00e0m ng\u0103n c\u1ea3n s\u1ef1 phi\u00ean m\u00e3.<\/p>\n
– P (promoter): V\u00f9ng kh\u1edfi \u0111\u1ed9ng, n\u01a1i m\u00e0 ARN polimeraza b\u00e1m v\u00e0o v\u00e0 kh\u1edfi \u0111\u1ea7u phi\u00ean m\u00e3.<\/p>\n
M\u1ed9t gen kh\u00e1c tuy kh\u00f4ng n\u1eb1m trong th\u00e0nh ph\u1ea7n c\u1ee7a op\u00earon, song c\u0169ng c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng c\u00e1c gen c\u1ee7a op\u00earon l\u00e0 gen \u0111i\u1ec1u h\u00f2a R.<\/p>\n
Gen \u0111i\u1ec1u h\u00f2a R khi ho\u1ea1t \u0111\u1ed9ng s\u1ebd t\u1ed5ng h\u1ee3p n\u00ean protein \u1ee9c ch\u1ebf. Protein n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng li\u00ean k\u1ebft v\u1edbi v\u00f9ng v\u1eadn h\u00e0nh d\u1eabn \u0111\u1ebfn ng\u0103n c\u1ea3n qu\u00e1 tr\u00ecnh phi\u00ean m\u00e3.<\/p>\n
B\u00e0i 3 (trang 18 SGK Sinh h\u1ecdc 12):\u00a0Gi\u1ea3i th\u00edch c\u01a1 ch\u1ebf \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng c\u1ee7a op\u00earon Lac.<\/strong><\/p>\nL\u1eddi gi\u1ea3i:<\/b><\/p>\n
C\u01a1 ch\u1ebf \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng c\u1ee7a op\u00earon Lac<\/p>\n
– Khi m\u00f4i tr\u01b0\u1eddng kh\u00f4ng c\u00f3 lactozo:<\/p>\n
Gen \u0111i\u1ec1u h\u00f2a quy \u0111\u1ecbnh t\u1ed5ng h\u1ee3p protein \u1ee9c ch\u1ebf. Protein n\u00e0y li\u00ean k\u1ebft v\u1edbi v\u00f9ng v\u1eadn h\u00e0nh ng\u0103n c\u1ea3n qu\u00e1 tr\u00ecnh phi\u00ean m\u00e3 l\u00e0m cho c\u00e1c gen c\u1ea5u tr\u00fac kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng.<\/p>\n
– Khi m\u00f4i tr\u01b0\u1eddng c\u00f3 lactozo, m\u1ed9t s\u1ed1 ph\u00e2n t\u1eed lactozo li\u00ean k\u1ebft v\u1edbi protein \u1ee9c ch\u1ebf l\u00e0m bi\u1ebfn \u0111\u1ed5i c\u1ea5u h\u00ecnh kh\u00f4ng gian ba chi\u1ec1u c\u1ee7a n\u00f3 l\u00e0m cho protein \u1ee9c ch\u1ebf kh\u00f4ng th\u1ec3 li\u00ean k\u1ebft \u0111\u01b0\u1ee3c v\u1edbi v\u00f9ng v\u1eadn h\u00e0nh v\u00e0 do v\u1eady ARN polimeraza c\u00f3 th\u1ec3 li\u00ean k\u1ebft \u0111\u01b0\u1ee3c v\u1edbi v\u00f9ng kh\u1edfi \u0111\u1ed9ng \u0111\u1ec3 ti\u1ebfn h\u00e0nh phi\u00ean m\u00e3. Sau \u0111\u00f3, c\u00e1c ph\u00e2n t\u1eed mARN c\u1ee7a c\u00e1c gen c\u1ea5u tr\u00fac Z, Y, A \u0111\u01b0\u1ee3c d\u1ecbch m\u00e3 t\u1ea1o ra c\u00e1c enzim ph\u00e2n gi\u1ea3i \u0111\u01b0\u1eddng lactozo. Khi \u0111\u01b0\u1eddng lactozo b\u1ecb ph\u00e2n gi\u1ea3i h\u1ebft th\u00ec protein \u1ee9c ch\u1ebf l\u1ea1i li\u00ean k\u1ebft v\u1edbi v\u00f9ng ch\u1ec9 huy (v\u00f9ng v\u1eadn h\u00e0nh) v\u00e0 qu\u00e1 tr\u00ecnh phi\u00ean m\u00e3 b\u1ecb d\u1eebng l\u1ea1i.<\/p>\n
B\u00e0i 4 (trang 18 SGK Sinh h\u1ecdc 12):\u00a0H\u00e3y ch\u1ecdn ph\u01b0\u01a1ng \u00e1n tr\u1ea3 l\u1eddi \u0111\u00fang.<\/strong><\/p>\nTrong c\u01a1 ch\u1ebf \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen \u1edf sinh v\u1eadt nh\u00e2n s\u01a1, vai tr\u00f2 c\u1ee7a gen \u0111i\u1ec1u h\u00f2a l\u00e0 g\u00ec?<\/strong><\/p>\n\u00a0 \u00a0 a) N\u01a1i ti\u1ebfp x\u00fac v\u1edbi enzim ARN polimeraza.<\/strong><\/p>\n\u00a0b) Mang th\u00f4ng tin quy \u0111\u1ecbnh protein \u0111i\u1ec1u h\u00f2a.<\/strong><\/p>\n\u00a0 \u00a0 c) Mang th\u00f4ng tin quy \u0111\u1ecbnh enzim ARN polimeraza.<\/strong><\/p>\n\u00a0 \u00a0 d) N\u01a1i li\u00ean k\u1ebft v\u1edbi protein \u0111i\u1ec1u h\u00f2a.<\/strong><\/p>\nL\u1eddi gi\u1ea3i:<\/b><\/p>\n
\u0110\u00e1p \u00e1n: b.<\/p>\n
<\/p>\n
\n
<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
B\u00e0i 1 (trang 18 SGK Sinh h\u1ecdc 12):\u00a0Th\u1ebf n\u00e0o l\u00e0 \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen? L\u1eddi gi\u1ea3i: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen l\u00e0 qu\u00e1 tr\u00ecnh \u0111i\u1ec1u h\u00f2a l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m c\u1ee7a gen \u0111\u01b0\u1ee3c t\u1ea1o ra trong t\u1ebf b\u00e0o \u0111\u1ea3m b\u1ea3o cho ho\u1ea1t \u0111\u1ed9ng s\u1ed1ng c\u1ee7a t\u1ebf ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng c\u0169ng nh\u01b0 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1307],"tags":[1397,1398],"yoast_head":"\n
Ph\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 1 - B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ph\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 1 - B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 18 SGK Sinh h\u1ecdc 12):\u00a0Th\u1ebf n\u00e0o l\u00e0 \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen? L\u1eddi gi\u1ea3i: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen l\u00e0 qu\u00e1 tr\u00ecnh \u0111i\u1ec1u h\u00f2a l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m c\u1ee7a gen \u0111\u01b0\u1ee3c t\u1ea1o ra trong t\u1ebf b\u00e0o \u0111\u1ea3m b\u1ea3o cho ho\u1ea1t \u0111\u1ed9ng s\u1ed1ng c\u1ee7a t\u1ebf ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng c\u0169ng nh\u01b0 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam\" \/>\n<meta property=\"article:published_time\" content=\"2018-03-20T09:34:31+00:00\" \/>\n<meta name=\"author\" content=\"H\u00e0 Trang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"H\u00e0 Trang\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/\",\"url\":\"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/\",\"name\":\"Ph\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 1 - B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen\",\"isPartOf\":{\"@id\":\"https:\/\/lop12.edu.vn\/#website\"},\"datePublished\":\"2018-03-20T09:34:31+00:00\",\"dateModified\":\"2018-03-20T09:34:31+00:00\",\"author\":{\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\"},\"breadcrumb\":{\"@id\":\"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/lop12.edu.vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ph\u1ea7n N\u0103m – Ch\u01b0\u01a1ng 1 – B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/lop12.edu.vn\/#website\",\"url\":\"https:\/\/lop12.edu.vn\/\",\"name\":\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/lop12.edu.vn\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\",\"name\":\"H\u00e0 Trang\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"caption\":\"H\u00e0 Trang\"},\"url\":\"https:\/\/lop12.edu.vn\/author\/trangvth2\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ph\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 1 - B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/","og_locale":"en_US","og_type":"article","og_title":"Ph\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 1 - B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen","og_description":"B\u00e0i 1 (trang 18 SGK Sinh h\u1ecdc 12):\u00a0Th\u1ebf n\u00e0o l\u00e0 \u0111i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen? L\u1eddi gi\u1ea3i: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen l\u00e0 qu\u00e1 tr\u00ecnh \u0111i\u1ec1u h\u00f2a l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m c\u1ee7a gen \u0111\u01b0\u1ee3c t\u1ea1o ra trong t\u1ebf b\u00e0o \u0111\u1ea3m b\u1ea3o cho ho\u1ea1t \u0111\u1ed9ng s\u1ed1ng c\u1ee7a t\u1ebf ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng c\u0169ng nh\u01b0 […]","og_url":"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/","og_site_name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam","article_published_time":"2018-03-20T09:34:31+00:00","author":"H\u00e0 Trang","twitter_card":"summary_large_image","twitter_misc":{"Written by":"H\u00e0 Trang","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/","url":"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/","name":"Ph\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 1 - B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen","isPartOf":{"@id":"https:\/\/lop12.edu.vn\/#website"},"datePublished":"2018-03-20T09:34:31+00:00","dateModified":"2018-03-20T09:34:31+00:00","author":{"@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45"},"breadcrumb":{"@id":"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/lop12.edu.vn\/phan-nam-chuong-1-bai-3-dieu-hoa-hoat-dong-gen\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lop12.edu.vn\/"},{"@type":"ListItem","position":2,"name":"Ph\u1ea7n N\u0103m – Ch\u01b0\u01a1ng 1 – B\u00e0i 3: \u0110i\u1ec1u h\u00f2a ho\u1ea1t \u0111\u1ed9ng gen"}]},{"@type":"WebSite","@id":"https:\/\/lop12.edu.vn\/#website","url":"https:\/\/lop12.edu.vn\/","name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/lop12.edu.vn\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45","name":"H\u00e0 Trang","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","caption":"H\u00e0 Trang"},"url":"https:\/\/lop12.edu.vn\/author\/trangvth2\/"}]}},"_links":{"self":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/22874"}],"collection":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/comments?post=22874"}],"version-history":[{"count":1,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/22874\/revisions"}],"predecessor-version":[{"id":22877,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/22874\/revisions\/22877"}],"wp:attachment":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/media?parent=22874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/categories?post=22874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/tags?post=22874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}