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【单选题】
—Father is working all the time. Let's advise him ____ any longer. —OK. Let's go. [ ]A.
work
B.
working
C.
not to work
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反馈参考答案：
举一反三
【单选题】Polypeptide synthesis proceeds from the _____ to the _____.
A.
entrance site; exit site
B.
50S subunit; 30S subunit
C.
C-terminus; N-terminus
D.
N-terminus; C-terminus
E.
peptidyl site; aminoacyl site
【单选题】The direction of protein synthesis (polypeptide chain) is ( )
A.
From N to C
B.
From 5’to 3’
C.
From C to N
D.
From 3’to 5’
E.
None of above
【单选题】A gene that takes part in the synthesis of polypeptide is
A.
Structural gene
B.
Regulator gene
C.
Operator gene
D.
Promoter gene
E.
Noncoding region
【简答题】Peptide / peptide bond / polypeptide chain
【简答题】多肽(polypeptide)
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