题目内容

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'

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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

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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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Which of the following statements about the double-helix structure of B-DNA is false ( )

A. consists of two antiparallel chains
B. The bases are arranged on the inside of the helix, phosphate and deoxyribose lies outside of the helix
C. Each turn consists of 10 base pairs
D. The base pairing between the two chains is very strict, that is, A-T, G - C pairs
E. the double helical surface only has major groove

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In which solution, does serum albumin,pI 4.7,have positive charge( )

A. pH7.0
B. pH8.0
C. pH6.0
D. pH4.0
E. pH5.0

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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 ()

when hexokinase use glucose as substrate, Km=2/3[], its reaction speed() equals to how much Vm ()

Which of the following statements about the double-helix structure of B-DNA is false ( )

In which solution, does serum albumin,pI 4.7,have positive charge( )

A. 5'-AUGUCA-3'
B. 5'-ATGUCA-3'
C. 5'-UCGUCU-3'
D. 5'-ACGTCA-3'
E. 5'-ACGUGT-3'