the relationship of Km to the affinity of substrate is ( )
A. Km smaller, the stronger the affinity
B. Km larger, the stronger the affinity
C. Km has no relationship of affinity
D. Km smaller, the weaker the affinity
E. 1/Km smaller, the stronger the affinity
The base sequence of DNA template is 3-TACAGT-5, the base sequence of its RNA transcript should be ()
A. 5'-AUGUCA-3'
B. 5'-ATGUCA-3'
C. 5'-UCGUCU-3'
D. 5'-ACGTCA-3'
E. 5'-ACGUGT-3'
The polymerase which is used in DNA replication is ()
A. DNA-dependent RNA polymerase
B. DNA-dependent DNA polymerase
C. RNA-dependent RNA polymerase
D. RNA-dependent DNA polymerase
E. none of above
when hexokinase use glucose as substrate, Km=2/3[], its reaction speed() equals to how much Vm ()
A. 75%
B. 50%
C. 60%
D. 15%
E. 33%
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