The average nitrogen content of protein is: ()
A. 0.1
B. 0.12
C. 0.14
D. 0.16
E. 0.18
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Which is the stucture of eukaryotic mRNA 3' end ? ()
A. poly A
B. poly U
C. poly T
D. poly C
E. poly G
Which one is correct about DNA denaturation? ()
A. hydrogen bond between the complementary base pair cleavage
B. the sequence of basic group is destroyed
C. DNA denaturation is irreversible
D. character of light absorption disappear
E. A260 is decreased
Which is the secondary structure of DNA? ()
A. α-helix
B. β-folding
C. supercoil
D. β-turn
E. double helix structure
The kinetic property of uncompetitive inhibition is: ()
A. Km is increased,Vmax is unchanged
B. Km is unchanged,Vmax is unchanged
C. Km is decreased,Vmax is decreased
D. Km is unchanged,Vmax is decreased
E. Km is increased,Vmax is decreased
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