Ôn thi tốt nghiệp THPT môn Hoá học - Lớp 12 - Đề tham khảo tốt nghiệp THPT môn Hóa học năm 2025 của Ninh Bình (lần 2)

{"save":1,"level":1,"time":"0","total":40,"point":5,"segment":[{"id":"5451","test_id":"535","question":"<p>Insulin l&agrave; hoocmon c\u1ee7a c\u01a1 th\u1ec3 c&oacute; t&aacute;c d\u1ee5ng \u0111i\u1ec1u ti\u1ebft l\u01b0\u1ee3ng \u0111\u01b0\u1eddng trong m&aacute;u. Th\u1ee7y ph&acirc;n m\u1ed9t ph\u1ea7n insulin thu \u0111\u01b0\u1ee3c heptapeptide (X). Khi th\u1ee7y ph&acirc;n kh&ocirc;ng ho&agrave;n to&agrave;n X thu \u0111\u01b0\u1ee3c h\u1ed7n h\u1ee3p c&aacute;c peptide trong \u0111&oacute; c&oacute; c&aacute;c peptide sau: <span class=\"math-tex\">$Ser-His-Leu; Val-Glu-Ala; His-Leu-Val; Gly-Ser-His$<\/span>. N\u1ebfu \u0111&aacute;nh s\u1ed1 amino acid \u0111\u1ea7u N trong X l&agrave; s\u1ed1 1 th&igrave; amino acid Val s\u1ebd \u1edf v\u1ecb tr&iacute; s\u1ed1<\/p>","options":["<strong>A.<\/strong> 3","<strong>B.<\/strong> 5","<strong>C.<\/strong> 2","<strong>D.<\/strong> 4"],"correct":"2","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> 5.<\/span><\/p><p>X c&oacute; 7 m\u1eaft x&iacute;ch, t\u1ea1o b\u1edfi 7 amino axit (Gly, Ala, Val, Glu, Ser, His, Leu) n&ecirc;n m\u1ed7i m\u1eaft x&iacute;ch ch\u1ec9 xu\u1ea5t hi\u1ec7n 1 l\u1ea7n duy nh\u1ea5t.<\/p><p>S\u1ea3n ph\u1ea9m c&oacute; Ser-His-Leu v&agrave; His-Leu-Val n&ecirc;n X c&oacute; \u0111o\u1ea1n Ser-His-Leu-Val.<\/p><p>S\u1ea3n ph\u1ea9m c&oacute; Val-Glu-Ala n&ecirc;n X c&oacute; \u0111o\u1ea1n Ser-His-Leu-Val-Glu-Ala.<\/p><p>S\u1ea3n ph\u1ea9m c&oacute; Gly-Ser-His n&ecirc;n X l&agrave; Gly-Ser-His-Leu-Val-Glu-Ala.<\/p><p>Suy ra Val \u1edf v\u1ecb tr&iacute; s\u1ed1 5.<\/p>","type":"choose","user_id":"131","test":"1","date":"2025-06-13 09:08:16"},{"id":"5453","test_id":"535","question":"<p>K&iacute; hi\u1ec7u c\u1eb7p oxi h&oacute;a - kh\u1eed \u1ee9ng v\u1edbi qu&aacute; tr&igrave;nh kh\u1eed&nbsp;<span class=\"math-tex\">$Fe^{3+}+1e\\rightarrow Fe^{2+}$<\/span>&nbsp;l&agrave;<\/p>","options":["<strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$Fe^{2+}\/Fe$<\/span>","<strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$Fe^{3+}\/Fe$<\/span>","<strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$Fe^{3+}\/Fe^{2+}$<\/span>","<strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$Fe^{2+}\/Fe^{3+}$<\/span>"],"correct":"3","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$Fe^{3+}\/Fe^{2+}$<\/span>.<\/span><\/p><p>D\u1ea1ng oxi h&oacute;a l&agrave;&nbsp;<span class=\"math-tex\">$Fe^{3+}$<\/span>, d\u1ea1ng kh\u1eed l&agrave;&nbsp;<span class=\"math-tex\">$Fe^{2+}$<\/span>.<\/p>","type":"choose","user_id":"131","test":"1","date":"2025-06-13 09:12:28"}]}