A)107.1 B)142.8 C)178.5 D)163.2
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*0,34nm=107,1nm Javob: A _____________________________ 185. 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-DNK malekulasini uzunligini aniqlang.(10 ta nukleotid
oralig`I 3.4 nm hisoblanadi)
A)107.1 B)142.8 C)178.5 D)163.2
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) 140*3=420 4) 420*0,34nm=142,8nm Javob: B _____________________________ 186. 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-DNK malekulasini uzunligini aniqlang.(10 ta nukleotid
oralig`I 3.4 nm hisoblanadi)
A)107.1 B)142.8 C)178.5 D)163.2
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*0,34nm=178,5nm Javob: C
