Amino acid và peptide

Home Lớp 12 Hoá học Lớp 12 - Sách KNTT Bài 9: Amino acid và peptideBài tập cơ bản

{"common":{"save":0,"post_id":"10108","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9167","post_id":"10108","mon_id":"1160346","chapter_id":"1160215","question":"Ch\u1ea5t nào sau \u0111ây có ch\u1ee9a nguyên t\u1ed1 nitrogen trong phân t\u1eed?<\/p>","options":["A. Ethyl formate","B. Saccharose","C. Tristearin","D. Alanine."],"correct":"4","level":"1","hint":"G\u1ee3i ý: Hãy nh\u1edb r\u1eb1ng ch\u1ec9 nh\u1eefng h\u1ee3p ch\u1ea5t có nhóm –NH\u2082 ho\u1eb7c –NH–<\/strong> m\u1edbi ch\u1ee9a nguyên t\u1ed1 nit\u01a1 (N)<\/strong> trong phân t\u1eed.<\/p>","answer":"\u0110áp án \u0111úng: D. Alanine.<\/span><\/strong><\/p>Gi\u1ea3i thích:<\/strong><\/p><ul data-end=\"408\" data-start=\"166\"> <li data-end=\"282\" data-start=\"166\">Alanine (CH\u2083CH(NH\u2082)COOH)<\/strong> là amino acid<\/strong>, trong phân t\u1eed có nguyên t\u1eed nitrogen (N)<\/strong> thu\u1ed9c nhóm –NH\u2082<\/strong>.<\/p><\/li> <li data-end=\"408\" data-start=\"283\">Ethyl formate (HCOOC\u2082H\u2085)<\/strong>, saccharose (C\u2081\u2082H\u2082\u2082O\u2081\u2081)<\/strong>, và tristearin (C\u2085\u2087H\u2081\u2081\u2080O\u2086)<\/strong> ch\u1ec9 ch\u1ee9a C, H, O<\/strong>, không có N.<\/p><\/li> <li data-end=\"408\" data-start=\"283\">→ Ch\u1ea5t ch\u1ee9a nguyên t\u1ed1 nitrogen là Alanine.<\/strong><\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-10-07 20:54:26","option_type":"txt","len":2},{"id":"9168","post_id":"10108","mon_id":"1160346","chapter_id":"1160215","question":"H\u1ee3p ch\u1ea5t H\u2082NCH\u2082COOH có tên là<\/p>","options":["A. valine.","B. lysine.","C. alanine.","D. glycine."],"correct":"4","level":"1","hint":"G\u1ee3i ý: Hãy nh\u1edb r\u1eb1ng h\u1ee3p ch\u1ea5t có công th\u1ee9c H\u2082N–CH\u2082–COOH<\/strong> là amino acid \u0111\u01a1n gi\u1ea3n nh\u1ea5t, có g\u1ed1c R = H.<\/p>","answer":"\u0110áp án \u0111úng: D. glycine.<\/span><\/strong><\/p>Gi\u1ea3i thích:<\/strong><\/p><ul data-end=\"435\" data-start=\"155\"> <li data-end=\"214\" data-start=\"155\">Công th\u1ee9c t\u1ed5ng quát c\u1ee7a amino acid là H\u2082N–CHR–COOH<\/strong>.<\/p><\/li> <li data-end=\"310\" data-start=\"215\">V\u1edbi R = H<\/strong>, ta \u0111\u01b0\u1ee3c glycine (glyxin)<\/strong> – amino acid nh\u1ecf nh\u1ea5t, không có carbon b\u1ea5t \u0111\u1ed1i.<\/p><\/li> <li data-end=\"435\" data-start=\"311\">Các ch\u1ea5t khác:<\/p> <ul data-end=\"435\" data-start=\"332\"> <li data-end=\"356\" data-start=\"332\">Alanine:<\/strong> R = CH\u2083<\/p><\/li> <li data-end=\"388\" data-start=\"359\">Valine:<\/strong> R = isopropyl<\/p><\/li> <li data-end=\"435\" data-start=\"391\">Lysine:<\/strong> có chu\u1ed7i ch\u1ee9a thêm nhóm –NH\u2082<\/p><\/li> <\/ul> <\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-10-07 20:56:07","option_type":"txt","len":1},{"id":"9169","post_id":"10108","mon_id":"1160346","chapter_id":"1160215","question":"Ch\u1ea5t X có công th\u1ee9c H\u2082N–CH(CH\u2083)–COOH. Tên g\u1ecdi c\u1ee7a X là:<\/p>","options":["A. Glycine","B. Valine","C. Alanine","D. Lysine"],"correct":"3","level":"1","hint":"G\u1ee3i ý: Hãy nh\u1eadn d\u1ea1ng nhóm th\u1ebf R trong công th\u1ee9c amino acid t\u1ed5ng quát H\u2082N–CHR–COOH<\/strong> \u0111\u1ec3 xác \u0111\u1ecbnh tên.<\/p>","answer":"\u0110áp án \u0111úng: C. Alanine.<\/span><\/strong><\/p>Gi\u1ea3i thích:<\/strong><\/p><ul data-end=\"381\" data-start=\"156\"> <li data-end=\"212\" data-start=\"156\">Công th\u1ee9c t\u1ed5ng quát c\u1ee7a amino acid: H\u2082N–CHR–COOH<\/strong><\/p><\/li> <li data-end=\"272\" data-start=\"213\">V\u1edbi R = CH\u2083<\/strong>, amino acid \u0111ó là alanine (alanin)<\/strong>.<\/p><\/li> <li data-end=\"381\" data-start=\"273\">Các ch\u1ea5t khác:<\/p> <ul data-end=\"381\" data-start=\"294\"> <li data-end=\"316\" data-start=\"294\">Glycine:<\/strong> R = H<\/p><\/li> <li data-end=\"348\" data-start=\"319\">Valine:<\/strong> R = –CH(CH\u2083)\u2082<\/p><\/li> <li data-end=\"381\" data-start=\"351\">Lysine:<\/strong> R = –(CH\u2082)\u2084NH\u2082<\/p><\/li> <\/ul> <\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-10-07 20:59:20","option_type":"txt","len":0}]}