A)22% B)24% C)44% D)25%
Ishlanishi: 1) DNK dagi T ni topish: i-RNK dagi T=(U+A)/2
T=(19%+25%)/2=
22% Javob: A ____________________________
87. i-RNK da S-19% va G-25% bo`lsa teskari transkripsiya
jarayonida hosil bo`lgan DNK qo`sh zanjirida S-necha % ni tashkil
qiladi.
A)22% B)24% C)44% D)25%
Ishlanishi: 1) DNK dagi S ni topish: i-RNK dagi T=(G+S)/2
T=(19%+25%)/2=
22% Javob: A ____________________________
88. i-RNK da U-19%, S-11% va A-25% bo`lsa teskari
transkripsiya jarayonida hosil bo`lgan DNK qo`sh zanjiridagi
fosfodiefir bog`lar sonini aniqlang.
A)198 B)158 C)98 D)188
Ishlanishi: 1) U-19%, S-11%, A-25%, G-? G=100-(U+S+A)=45%
2) DNK ning 1 ta ipidagi N larni topamiz: N= U+S+A+G
N=19+11+25+45=100
3) 100*2=200 F=200-2=
198 Javob: A ____________________________
89. i-RNK da U-19%, S-11% va A-25% bo`lsa teskari
transkripsiya jarayonida hosil bo`lgan DNK qo`sh zanjiridagi
vodorod bog`lar sonini aniqlang.
A)256 B)264 C)320 D)296
Ishlanishi: 1) G=100-(U+S+A)=45%
2) DNK ning 1 ta ipidagi N larni topamiz: N= U+S+A+G
DNK dagi S ni topish: i-RNK dagi T=(G+S)/2
N=(U)19+(S)11+(A)25+(G)45=100
3) A-
T=(19+25)=
44 G-S=(11+45)=
56 4) H=2A+3G H=(2*44)+(3*56)=88+168=
256 Javob: A ____________________________
90. i-RNK da U-19%, S-11% va A-25% bo`lsa teskari
transkripsiya jarayonida hosil bo`lgan DNK qo`sh zanjiridagi S va G
lar orasidagi vodorod bog`lar sonini aniqlang.
A)198
B)168 C)98 D)188
Ishlanishi: 1) G=100-(U+S+A)=45%
2) DNK ning 1 ta ipidagi N larni topamiz: N= U+S+A+G
DNK dagi S ni topish: i-RNK dagi T=(G+S)/2
N=(U)19+(S)11+(A)25+(G)45=100
