11- During the acid hydrolysis of a protein (6N HCl at 110°C for 24, 48 and 72 hours) to determine the amino acid composition: a- Serine and Threonine are completely destroyed at all time points and cannot be quantitated. b- Tryptophan is completely destroyed at all time points and cannot be quantitated. C- Asparagine and Glutamine are slowly converted to Aspartate and Glutamate and a time course correction must be used. d- Histidine is slowly destroyed and a time course correction must be used. e- Peptide bonds involving hydrophobic residues are slowly hydrolyzed and time course analysis must be used. Which of the above statements are true?

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