题目内容

Nucleic acid was first found by ()

A. Boysen Jensen
B. Friederich Meischer
C. Johansen
D. Went

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Here is a mRNA of prokaryote. 5'-GGCGAAC()GAGGCTAGAUGCACCCUUCGCAGUACGU-3'. The order of the codon to be translated is().

A. -AUG-ACG-CUU-CCC-ACG-UAG-CTA-
B. -AUG-GAG-GCT-AGA-UGC-ACC-CUU-CGC-AGU-ACG-
C. -AUG-UUC-GCC-
D. -CTA-GAU-GCA-CCC-UUC-GCA-GUA-CGU-
E. -AUG-CAC-CCU-UCG-CAG-UAC-

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TrmB protein can bind to the promoter region of malE gene,trehalose can bind to trmB protein.In the presence of trehalose, the binding of trmB protein to male gene was inhibited and the malE gene was transcribed.So we can know that trmb protein is a()?

A. Inducer
B. Positive control protein
C. Operon
D. Repressor
E. Repressor gene

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The following repair methods only work when pyrimidine dimer is produced()

A. Photoreactivation repair
B. Excision repair
C. Recombination repair
D. SOS repair
E. Mismatch repair

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Which technologies will not be used in the Southern blot?()

A. Restriction digestion
B. Marker probe
C. Sequencing primer
D. Electrophoresis
E. Filter paper (nitrocellulose)

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Nucleic acid was first found by ()

A. Boysen Jensen B. Friederich Meischer C. Johansen D. Went

Here is a mRNA of prokaryote. 5'-GGCGAAC()GAGGCTAGAUGCACCCUUCGCAGUACGU-3'. The order of the codon to be translated is().

TrmB protein can bind to the promoter region of malE gene,trehalose can bind to trmB protein.In the presence of trehalose, the binding of trmB protein to male gene was inhibited and the malE gene was transcribed.So we can know that trmb protein is a()?

The following repair methods only work when pyrimidine dimer is produced()

Which technologies will not be used in the Southern blot?()

A. Boysen Jensen
B. Friederich Meischer
C. Johansen
D. Went