dnk oddiy masalalari

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1. masala ishlashni endi boshlaganlar uchun 2. dnk oddiy masalalari 3. (boshlang’ich savollar) 4. nukleotidlar sonini topish (1). 1. dnkni malum bir fragmentida (bo’lagida) 2400 ta nukleotid bor. ushbu fragmentda a (adenin) soni 420 ta bo’lsa, t(timin) soni qancha bo’ladi? 5. a) 560 b) 180 c) 240 d) 420 6. 2. dnkni malum bir fragmentida 2400 ta nukleotid bor. ushbu fragmentda a (adenin) soni 420 ta bo’lsa, s(sitozin) soni qancha bo’ladi? 7. a) 240 b) 420 c) 640 d) 780 8. 3. dnkni malum bir fragmentida 2400 ta nukleotid bor. ushbu fragmentda purin asoslari (adenin va guanin) soni 1200 ta bo’lsa, pirimidin asoslari(sitozin va timin) sonini toping. 9. a) 2400 b) 1200 c) 1000 d)1300 10. 4. dnkni malum bir fragmentida 2200 ta nukleotid bor. ushbu fragmentda a 20 % ni tashkil etadi. dnk dagi g % ni toping. 11. a) 20 b) 60 c) 30 d) 50 12. 5. …

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asida ikkita, guanin va sitozin nukleotidlari orasida uchta vodorod bog‘i borligi ma’lum. ushbu fragmentda 3060 ta vodorod bog’lar bor. a soni 420 ta bo’lsa, g va s soni qancha bo’ladi. 19. a) 2200 b) 1800 c) 1560 d) 1480 5. dnk molekulasida adenin va timin nukleotidlari orasida ikkita, guanin va sitozin nukleotidlari orasida uchta vodorod bog‘i borligi ma’lum. ushbu fragmentda 3060 ta vodorod bog’lar bor. a soni 420 ta bo’lsa, g va s soni umumiy nukleotidlarning necha % ni tashkil etadi. 20. a) 65.5 b) 63.8 c) 60 d) 65 21. fosfodiefir bog’lar sonini topish. (nukleotidlar o‘zaro fosfodiefir bog‘ orqali bog’lanadi). 1. nuklein kislotalar molekulasida nukleotidlar o‘zaro fosfodiefir bog‘lari orqali bog'lanadi. (a – g – t – s ) dnkni qo’sh zanjirida 2800 ta nukleotid bor. ushbu. dnkni qo’sh zanjirida 2800 ta dnk dagi fosfodiefir bog’lar sonini toping. 22. a) 2800 b) 2802 c) 2798 d) 2796 2. nuklein kislotalar …

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r 31. a)1080 b) 560 c) 660 d) 780 3. agar dnk uzunligi 816 nm ga teng bo’lib,undagi qo’shni nukleotidlar orasidagi msofa 0.34 nm ga teng bo’lsa ushbu dnk fragmentida nechta nukleotidlar bor. 32. a) 2500 b) 2440 c)4800 d) 2340 4. agar dnk uzunligi 1088 nm ga teng bo’lib,undagi qo’shni nukleotidlar orasidagi msofa 0.34 nm ga teng bo’lsa ushbu dnk fragmentida nechta nukleotidlar (a), va fosfodiefir bog’lar (b) bor. 33. a) a- 3200; b- 3198 b) a – 3202; b- 3000 c) a- 3200; b- 3202 d) a- 3000; b-3002 5. dnkni malum bir fragmentida 3400 ta nukleotid bor. ushbu dnk da a soni 420 ta bo’lsa, dnk ning uzunligini(a), fosfodiefir bog’lar sonini (b), vodorod bog’lar sonini toping. 34. a) a- 1500; b- 3402; c- 4600 b) a- 1156; b- 3402; c- 4680 35. c) a- 1102; b- 3402; c- 4600 d) a- 1150; b- 3402; c- 4680 36. …

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mentidagi nukleotidlar sonini va dnk uzunligini toping. 46. a) 270 ta, 91,8 nm b) 90 ta, 91,8 nm 47. c) 540 ta, 91,8 nm d) 270 ta, 94 nm 5. dnk ning tarkibidagi 69 juft nukleotid bo’lib, ularning tarkibida g nukleotidlari umumiy miqdori t nukleotidlaridan ikki xissa ko’p bo’lsa, ushbu dnk fragmentidagi vodorod bog’lar sonini aniqlang? 48. a) 368 b) 322 c) 345 d) 184 6. dnk ning tarkibidagi nukleotidlarnig barchasi bir xil miqdordaligi ma’lum bo’lsa ularni 265ta vodorod bog’ o’zaro birlashtirib tursa ushbu dnk dan transkripsiyalangan i-rnk ning uzunligi necha nm bo’ladi? 49. a) 36.04 b) 18.02 c) 9.01 d) 90.1 7. dnk (a) va rnk (b) tarkibidagi azotli asoslarni juftlab ko’rsating. 50. 1.adenin 2.atf 3.adf 4.guanin 5.sitozin 6.timin 7.uratsil 51. a) a-1.4.5.6 b-1.4.5.7 b) a-1.2.4.5 b-1.4.5.7 52. c) a-1.4.5.6 b-1.4.5.6 d) a-1.2.4.5 b-1.4.3.5 8. dnk fragmentida 222ta a nukleotidi mavjud bo’lib umumiy nukleotidlarning 10% ini tashkil qilishi ma’lum. …

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dlar bor va ular nechta aminokislotalarni kodlaydilar ? 59. a) 536 ta 1800 ta b) 540 ta180ta 60. c) 5480 ta 180 ta d)1080ta180ta 13. dnk tarkibiga kiruvchi guaninni nukleoyid tarkibini aniqlang ? a) guanin-riboiza-fosfat kislata qoldig’i b) guanin,sitozin,fosfat kislata qoldig’i c) guanin-dezoksiriboza-fosfat kislata qoldig’i d) guanin-maltoza-fosfat kislata qoldig’i 14. 1200 juft nukleoditlardan iborat dnk zanjirida adenin va timin orasida ikkita,guanin va sitozin orasida uchta vodorod bog`i mavjud.ushbu fragmentda guanin va sitozin juftligi adenin va timin juftligidan 1,5 barobar ko`p bo`lsa,bu zanjirdagi guanin va sitozin juftligi orasidagi vodorod bog`lar sonini aniqlang? 61. a)960 b)3120 c)1440 d)2160 15. dnk qo’sh zanjiridagi ( 1) a-t orasida va (2) g-s orasida nechtadan vodorod bog’lar hosil bo’ladi ? a) (1) ikkita ; (2) uchta ; b) (1) uchta ; (2) ikkita 62. c) (1) bitta ; (2) ikkita c) (1) ikkita ; (2) bitta 16. agar dnk uzunligi 183,6 nm gat eng bo`lib, undagi …

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1. masala ishlashni endi boshlaganlar uchun 2. dnk oddiy masalalari 3. (boshlang’ich savollar) 4. nukleotidlar sonini topish (1). 1. dnkni malum bir fragmentida (bo’lagida) 2400 ta nukleotid bor. ushbu fragmentda a (adenin) soni 420 ta bo’lsa, t(timin) soni qancha bo’ladi? 5. a) 560 b) 180 c) 240 d) 420 6. 2. dnkni malum bir fragmentida 2400 ta nukleotid bor. ushbu fragmentda a (adenin) soni 420 ta bo’lsa, s(sitozin) soni qancha bo’ladi? 7. a) 240 b) 420 c) 640 d) 780 8. 3. dnkni malum bir fragmentida 2400 ta nukleotid bor. ushbu fragmentda purin asoslari (adenin va guanin) soni 1200 ta bo’lsa, pirimidin asoslari(sitozin va timin) sonini toping. 9. a) 2400 b) 1200 c) 1000 d)1300 10. 4. dnkni malum bir …

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