皮皮学，免费搜题
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搜题
【单选题】
引起金属疲劳断裂的载荷是( )。A.
静载荷
B.
冲击载荷
C.
交变载荷
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参考解析：
知识点：
皮皮学刷刷变学霸
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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