x=720 -bu 2-DNK dagi N lar soni
5) D3=D2/0,8 D3=720/0,8 D3=900
6) F=N-2 F=900-2=898F -fosfodiefir bog’lar soni Javob: C _____________________________ 171. 4ta nomalum nukleotidli DNK molekulalarining biridan
su`niy
sharoitda
99ta
peptid
bog`li
oqsil
molekulasi
sintezlandi.Barcha DNK molekulasidagi nukleotidlar oqsil
biosinteziga javob bo`lgan DNK molekulasidan 4,3 marta ko`p. 2-
DNK nukleotidi 1-DNK nukleotidlaridan 1,2 marta, 3-DNK dan 0,8
marta, 4-DNK nukleotidlaridan 2 marta katta bo`lsa,4-DNK
malekulasidagi fosfosiefir bog`lar sonini aniqlang.
A)718 B)598 C)898 D)358 Ishlanishi: 1) 1-DNK=x/1,2; 2-DNK=x; 3-DNK=x/0,8; 4-DNK=x/2
2) 99+1=100AK 100AK*3=300N 300N*2=600N
3) 600*4,3=2580 -4 ta DNK dagi barcha N lar
4) x/1,2+x+x/0,8+x/2=2580
10x+12x+15x+6x=30960
43x=30960
x=720 -bu 2-DNK dagi N lar soni
5) D4=D2/2 D4=720/2 D4=360
6) F=N-2 F=360-2=358F -fosfodiefir bog’lar soni Javob: D _____________________________ 172. 4ta nomalum nukleotidli DNK molekulalarining biridan
su`niy
sharoitda
99ta
peptid
bog`li
oqsil
molekulasi
sintezlandi.Barcha DNK molekulasidagi nukleotidlar oqsil
biosinteziga javob bo`lgan DNK molekulasidan 4,3 marta ko`p. 2-
DNK nukleotidi 1-DNK nukleotidlaridan 1,2 marta, 3-DNK dan 0,8
marta, 4-DNK nukleotidlaridan 2 marta katta bo`lsa,2-DNK
malekulasini uzunligini aniqlang.
A)122,4 B)153 C)102 D)61,2
Ishlanishi: 1) 1-DNK=x/1,2; 2-DNK=x; 3-DNK=x/0,8; 4-DNK=x/2
2) 99+1=100AK 100AK*3=300N 300N*2=600N
3) 600*4,3=2580 -4 ta DNK dagi barcha N lar
4) x/1,2+x+x/0,8+x/2=2580
10x+12x+15x+6x=30960
43x=30960
x=720 -bu 2-DNK dagi N lar soni 720/2=360
5) L=N*0,34nm L=360*0,34nm L=122,4nm Javob: A
