This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Translation, Subject name: Biochemistry
[{'content': 'Which of the following post translational modification process is Irreversible ? \nSelect and explain. \nA. Acylation, B. Phosphorylation, C. Ubiquitination, D. ADP ribosylation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Post translational modifications REVERSIBLE IRREVERSIBLE Disulfide bridge Proteolysis Glycosylation Ubiquitination Phosphorylation Lysine hydroxylation Acylation Proline hydroxylation N-acetylation Methylation ADP-ribosylation', 'role': 'assistant'}]