x=720 -bu 2-DNK dagi N lar soni
5) D1=D2/1,2 D1=720/1,2 D1=600 600/2=
300 Javob: A 6) L=N*0,34nm L=300*0,34nm L=
102nm Javob: C _____________________________ 175. 3 xil nomalum nukleotidli DNK malekulasi mavjud
bo`lsa.Ulardan oqsil sintezlanishi uchun jami 420 ta t-RNK
sarflangan. 2-DNK malekulasidan oqsil sintezlanishi uchun
sarflangan t-RNKlar soni 1-DNKdan oqsil sintezlanishi uchun
sarflangan t-RNKlar sonidan 0.75 marta kam, 3-DNKdan oqsil
sintezlanishi uchun sarf bo`lgan t-RNKlar sonidan 0.8 marta ko`p
bo`lsa, 3-DNKdagi nukleotidlar sonini aniqlang.
A)1050 B)840 C)630 D)920
Ishlanishi: 1) 1-DNK=x*0,75; 2-DNK=x; 3-DNK=x/0,8;
2) x*0,75+x+x/0,8=420
0,6x+0,8x+x=336
2,4x=336
x=140 -bu 2-DNK dagi t-RNK lar soni
3) D3=D2/0,8 D3=140*0,8 D3=175 175*3=
525 4) 525*2=
1050N Javob: A _____________________________ 176. 3 xil nomalum nukleotidli DNK malekulasi mavjud
bo`lsa.Ulardan oqsil sintezlanishi uchun jami 420 ta t-RNK
sarflangan. 2-DNK malekulasidan oqsil sintezlanishi uchun
sarflangan t-RNKlar soni 1-DNKdan oqsil sintezlanishi uchun
sarflangan t-RNKlar sonidan 0.75 marta kam, 3-DNKdan oqsil
sintezlanishi uchun sarf bo`lgan t-RNKlar sonidan 0.8 marta ko`p
bo`lsa, 1-DNKdagi nukleotidlar sonini aniqlang.
A)1050 B)840
C)630 D)920
Ishlanishi: 1) 1-DNK=x*0,75; 2-DNK=x; 3-DNK=x/0,8;
2) x*0,75+x+x/0,8=420
0,6x+0,8x+x=336
2,4x=336
x=140 -bu 2-DNK dagi t-RNK lar soni
3) D1=D2*0,75 D1=140*0,75 D1=105 105*3=315
4) 315*2=
630N Javob: C _____________________________ 177. 3 xil nomalum nukleotidli DNK malekulasi mavjud
bo`lsa.Ulardan oqsil sintezlanishi uchun jami 420 ta t-RNK
sarflangan. 2-DNK malekulasidan oqsil sintezlanishi uchun
sarflangan t-RNKlar soni 1-DNKdan oqsil sintezlanishi uchun
sarflangan t-RNKlar sonidan 0.75 marta kam, 3-DNKdan oqsil
sintezlanishi uchun sarf bo`lgan t-RNKlar sonidan 0.8 marta ko`p
bo`lsa, 2-DNKdagi nukleotidlar sonini aniqlang.
A)1050
