1. Which amino acid does not have a chiral center? a) glycine b) alanine c) thre

Question

1. Which amino acid does not have a chiral center? a) glycine b) alanine c) threonine d) histidine e) asparagine 2. At pH = 6.9, which phosphates would be predominant (For HP04, pKal-22, pKa2-69, pKa.- 12.4)? a) HaPO4 and H2PO b) H:PO and HPO2 c) HPO2 and PO d) All of the above 3. Choose a polar neutral acidic acid. b) d) HN-CH-C-OH H2N-CH-C-o H2 CH2 OH NH 4. The amino acid lysine has pKa values of 2.2,9.0, and 10.5. Which of the following does not represent an effective buffer pH range that can be achieved when you use lysine as buffer? c) 7.0 a) 2.0 b) 3.0 d) 8.0 e) 9.3 5, what is the predominant form of aspartic acid at pH 7 (pkal = 2.0, pKa2-39, pK.,-99)? b) H3N H2 OH 0 6. Which amino acid will be buried inside a protein when the protein is dissolved in H:0 a) Lysine b) Threonine Phenylalanine d) Asparagine egltamate

Explanation / Answer

1. Which amino acid does not have a chiral center? a) glycine b) alanine c) thre

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