MCQ Questions on Prost Translational Modification with Answers (PDF)

Post-translational modifications are chemical changes made to proteins after translation, which affect their function, stability, and localization. These modifications include processes such as phosphorylation, glycosylation, acetylation, and ubiquitination. They can activate or deactivate enzymes, alter protein interactions, or target proteins for degradation. Such modifications are crucial for regulating protein activity, ensuring proper cellular function, and responding to environmental changes or cellular signals, thus playing a key role in cellular homeostasis and signaling. This is an MCQ Questions on Post Translational Modification. You can download all these questions as PDF from the results page of this quiz.

Molecular Biology Notes  |  Molecular Biology PPTs  |  Molecular Biology MCQs

Welcome to your MCQ on Post Translational Modifications

1. 
What is the primary purpose of post-translational modifications (PTMs) in proteins?

2. 
Which enzyme is responsible for the addition of phosphate groups in phosphorylation?

3. 
What type of post-translational modification involves the attachment of a carbohydrate moiety to a protein?

4. 
Which PTM is often associated with the regulation of gene expression by modifying histones?

5. 
What is the role of ubiquitination in protein metabolism?

6. 
Which post-translational modification is commonly used to regulate protein interactions with other molecules by adding a lipid group?

7. 
Which of the following PTMs is involved in the stabilization of proteins by adding a small, non-ubiquitin-like molecule?

8. 
Which PTM is crucial for regulating protein-protein interactions by altering the protein’s charge?

9. 
What is the role of hydroxylation in collagen biosynthesis?

10. 
Which modification involves the addition of a small protein to lysine residues to regulate protein function?

11. 
What is the primary function of acetylation in regulating protein function?

12. 
Which PTM can impact protein folding and stability by adding a disulfide bond?

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