HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
Giải phương trình: \(\left(\sqrt{x^2-x+3}-2x-1\right)\left(17\sqrt{x+5}-6\sqrt{5-x}+\sqrt{2x+1}-48\right)=0\)
\(\frac{A}{G}=\frac{3}{2}\)
\(A+T+G+X=6400\)
\(A=T=6400\div10\times3=1920nu\)
\(G=X=6400\div10\times2=1280nu\)
a) 5' TTTAAAAXGTAGXXXAAATTGGGXAA 3'
b) 3' XGTTTAAGGXXXATXTXGATXTXGAGATX 5'
c) 5' GXAXTGXAAXTGGTGXTXXAGAATXTAGX 3'
\(L=\frac{N}{2}.3,4\Rightarrow N=1800nu\)
\(A=T=20\%\times1800=360nu\)
\(G=X=30\%\times1800=540nu\)
Có:
\(T_1=A_2=15\%\times900=135nu\)
\(A_1=T_2=360-135=225nu\)
\(X_1=G_2=35\%\times900=315nu\)
\(G_1=X_2=540-315=225nu\)
\(X=G=480nu\)
\(H=2A+3G\Leftrightarrow2700=2A+3.480\Rightarrow A=T=630nu\)
\(L_{ADN}=\frac{N}{2}.3,4=\frac{2220}{2}.3,4=3774A^0\)