Which statement best describes the mechanism(s) of posttranslational regulation of gene expression?
A. Covalent modification of newly synthesized proteins generally has no marked effect on protein function.
B. Protein synthesis is often repressed by feedback or noncompetitive inhibition.
C. Allosteric regulation following transcription of mRNA occurs in many biosynthetic pathways.
D. Once a protein is synthesized, there is little to no posttranslational modification.
Answer: C
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Fill in the blank(s) with the appropriate word(s).
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