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Questions and Answers
What is the role of ornithine in amino acid metabolism?
What is the role of ornithine in amino acid metabolism?
- It is involved in the urea cycle (correct)
- It is a component of protein turnover
- It is a precursor to serotonin
- It is not included in the 21 amino acids, but considered as an amino acid
Which of the following is an example of a peptide antibiotic from Bacillus brevis?
Which of the following is an example of a peptide antibiotic from Bacillus brevis?
- Penicillin
- Erythromycin
- Gramicidin (S) (correct)
- Vancomycin
Which process is not a post-translational modification of proteins?
Which process is not a post-translational modification of proteins?
- Hydroxylation
- Protein turnover (correct)
- S-Nitrosylation
- Glycosylation
What are the precursors of some signaling molecules according to the text?
What are the precursors of some signaling molecules according to the text?
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Which of the following is a role of various organs in amino acid metabolism?
Which of the following is a role of various organs in amino acid metabolism?
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Study Notes
Amino Acid Metabolism
- Ornithine plays a crucial role in amino acid metabolism, particularly in the urea cycle.
Peptide Antibiotics
- Gramicidin is an example of a peptide antibiotic produced by Bacillus brevis.
Post-Translational Modification of Proteins
- Hydrolysis is not a post-translational modification of proteins.
Signaling Molecules
- Amino acids, such as tyrosine and tryptophan, serve as precursors to some signaling molecules.
Organ Roles in Amino Acid Metabolism
- Various organs, including the liver, kidneys, and brain, play distinct roles in amino acid metabolism, such as synthesis, degradation, and regulation.
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