Tinh bột và cellulose

Home Lớp 12 Hoá học Lớp 12 - Sách KNTT Bài 6: Tinh bột và celluloseBài tập cơ bản

{"common":{"save":0,"post_id":"10095","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8997","post_id":"10095","mon_id":"1160346","chapter_id":"1159849","question":"Cellulose thu\u1ed9c lo\u1ea1i polysaccharide, là thành ph\u1ea7n chính t\u1ea1o nên màng t\u1ebf bào th\u1ef1c v\u1eadt, có nhi\u1ec1u trong g\u1ed7, bông gòn. Công th\u1ee9c c\u1ee7a cellulose là<\/p>","options":["A. (C\u2086H\u2081\u2080O\u2085)\u2099","B. C\u2081\u2082H\u2082\u2082O\u2081\u2081","C. C\u2086H\u2081\u2082O\u2086","D. C\u2082H\u2084O\u2082"],"correct":"1","level":"1","hint":"G\u1ee3i ý: Cellulose là polisaccharide \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi nhi\u1ec1u m\u1eaft xích β-glucose, m\u1ed7i m\u1eaft xích m\u1ea5t 1 phân t\u1eed n\u01b0\u1edbc khi trùng ng\u01b0ng.<\/p>","answer":"\u0110áp án \u0111úng: A. (C\u2086H\u2081\u2080O\u2085)\u2099<\/strong><\/span><\/p>Gi\u1ea3i thích:<\/p><ul data-end=\"505\" data-is-last-node=\"\" data-is-only-node=\"\" data-start=\"174\"> <li data-end=\"265\" data-start=\"174\">A \u0111úng<\/strong>: Công th\u1ee9c t\u1ed5ng quát c\u1ee7a polysaccharide (tinh b\u1ed9t, cellulose) là (C\u2086H\u2081\u2080O\u2085)\u2099.<\/p><\/li> <li data-end=\"352\" data-start=\"266\">B sai<\/strong>: C\u2081\u2082H\u2082\u2082O\u2081\u2081 là công th\u1ee9c c\u1ee7a disaccharide (saccharose, maltose, lactose).<\/p><\/li> <li data-end=\"428\" data-start=\"353\">C sai<\/strong>: C\u2086H\u2081\u2082O\u2086 là công th\u1ee9c c\u1ee7a monosaccharide (glucose, fructose).<\/p><\/li> <li data-end=\"505\" data-is-last-node=\"\" data-start=\"429\">D sai<\/strong>: C\u2082H\u2084O\u2082 là công th\u1ee9c c\u1ee7a acid acetic, không ph\u1ea3i carbohydrate.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-26 21:06:37","option_type":"txt","len":1},{"id":"8998","post_id":"10095","mon_id":"1160346","chapter_id":"1159849","question":"Polymer thiên nhiên X \u0111\u01b0\u1ee3c sinh ra trong quá trình quang h\u1ee3p c\u1ee7a cây xanh. \u1ede nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng, X t\u1ea1o v\u1edbi dung d\u1ecbch iodine h\u1ee3p ch\u1ea5t có màu xanh tím. Polymer X là<\/p>","options":["A. tinh b\u1ed9t.","B. cellulose.","C. saccharose.","D. glycogen."],"correct":"1","level":"1","hint":"G\u1ee3i ý: Hãy nh\u1edb ph\u1ea3n \u1ee9ng \u0111\u1eb7c tr\u01b0ng v\u1edbi dung d\u1ecbch I\u2082 (màu xanh tím) ch\u1ec9 x\u1ea3y ra v\u1edbi polisaccharide có m\u1ea1ch xo\u1eafn.<\/p>","answer":"\u0110áp án \u0111úng: A. tinh b\u1ed9t<\/strong><\/span><\/p>Gi\u1ea3i thích:<\/p><ul data-end=\"474\" data-is-last-node=\"\" data-is-only-node=\"\" data-start=\"159\"> <li data-end=\"270\" data-start=\"159\">A \u0111úng<\/strong>: Tinh b\u1ed9t (g\u1ed3m amylose m\u1ea1ch xo\u1eafn + amylopectin) cho màu xanh tím v\u1edbi I\u2082, \u0111\u1eb7c tr\u01b0ng \u0111\u1ec3 nh\u1eadn bi\u1ebft.<\/p><\/li> <li data-end=\"270\" data-start=\"159\">PTHH: (C\u2086H\u2081\u2080O\u2085)\u2099 + I\u2082 → [Tinh b\u1ed9t·I\u2082] (màu xanh tím)<\/p><\/li> <li data-end=\"341\" data-start=\"271\">B sai<\/strong>: Cellulose không có c\u1ea5u trúc xo\u1eafn, không cho màu v\u1edbi I\u2082.<\/p><\/li> <li data-end=\"406\" data-start=\"342\">C sai<\/strong>: Saccharose là disaccharide, không t\u1ea1o màu v\u1edbi I\u2082.<\/p><\/li> <li data-end=\"474\" data-is-last-node=\"\" data-start=\"407\">D sai<\/strong>: Glycogen cho màu nâu \u0111\u1ecf v\u1edbi I\u2082, không ph\u1ea3i xanh tím.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-26 21:07:18","option_type":"txt","len":1},{"id":"8999","post_id":"10095","mon_id":"1160346","chapter_id":"1159849","question":"Carbohydrate nào sau \u0111ây thu\u1ed9c lo\u1ea1i polysaccharide?<\/p>","options":["A. Saccharose.","B. Cellulose.","C. Fructose.","D. Glucose."],"correct":"2","level":"1","hint":"<article data-scroll-anchor=\"true\" data-testid=\"conversation-turn-68\" data-turn=\"assistant\" data-turn-id=\"request-68ce63f5-4988-8325-8e0b-3a7cabbee4b4-2\" dir=\"auto\" tabindex=\"-1\">G\u1ee3i ý: Polysaccharide là nh\u1eefng h\u1ee3p ch\u1ea5t cao phân t\u1eed, \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi nhi\u1ec1u \u0111\u01a1n v\u1ecb monosaccharide liên k\u1ebft v\u1edbi nhau.<\/p><\/article>","answer":"\u0110áp án \u0111úng: B. Cellulose<\/strong><\/span><\/p>Gi\u1ea3i thích:<\/p><ul data-end=\"388\" data-is-last-node=\"\" data-is-only-node=\"\" data-start=\"163\"> <li data-end=\"243\" data-start=\"163\">B \u0111úng<\/strong>: Cellulose là polysaccharide c\u1ea5u t\u1ea1o t\u1eeb nhi\u1ec1u m\u1eaft xích β-glucose.<\/p><\/li> <li data-end=\"286\" data-start=\"244\">A sai<\/strong>: Saccharose là disaccharide.<\/p><\/li> <li data-end=\"341\" data-start=\"287\">C sai<\/strong>: Fructose là monosaccharide (\u0111\u01b0\u1eddng \u0111\u01a1n).<\/p><\/li> <li data-end=\"388\" data-is-last-node=\"\" data-start=\"342\">D sai<\/strong>: Glucose c\u0169ng là monosaccharide.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-26 21:07:49","option_type":"txt","len":1}]}