Which of the following statements is TRUE?
A) Translocation of a protein through a membranous compartment requires a completed protein.
B) The term translated is applicable only to proteins synthesized by ribosomes using mRNA templates.
C) Translated proteins may contain both D and L-amino acids.
D) ADP-ribosylation is a non-covalent modification of a protein.
E) N-glycosidic bonds are always formed between a sugar and the N-terminal amino acid of a protein.

Question

Quizplus · Accepted Answer

The term "translation" specifically refers to the process of using an mRNA template to synthesize a protein by ribosomes.

Answer: C
 Translated proteins can indeed contain both D and L-amino acids, although L-amino acids are more prevalent in proteins.

Answer: A, D, and E are all false statements. 
 Translocation of a protein through a membranous compartment can involve an incomplete protein, ADP-ribosylation is a covalent modification of a protein, and N-glycosidic bonds can be formed between sugars and internal amino acids in a protein chain, not just the N-terminal amino acid.

Which of the Following Statements Is TRUE