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- Which of the following statements is true regarding the classification of amino acids? Group of answer choices The side chain of a polar basic amino acid contains hydroxyl groups The side chain of a polar acid amino acid contains carboxyl groups The side chain of the non-polar amino acid can exhibit H-bonding. The side chain of a polar amino acid contains hydrocarbon groups onlyThe amino acid alanine has a side chain of -CH3. What type of amino acid is alanine. 1. polar and hydrophilic 2. nonpolar and hydrophobic 3. acidic 4. basicWhich of the following pairs of amino acids can have intermolecular hydrogen bonding between the functional groups in their side chains? Select all that apply. phenylalanine and tyrosine two tyrosine residues serine and threonine alanine and threonine
- Which of the following amino acids has a net charge of +2 at a low pH? Which has a net charge of -2 at high pH? Aspartic acid, alanine, arginine, glutamic acid, leucine, lysineWhich of the following is the distinguishing factor of a protein? The backbone of the protein chain Its solubility The side chains of the protein chain The prosthetic groupWhich amino acid is NOT associated with the oligopeptide given by the shorthand notation GRFAV? Valine Phenylalanine Glycine Arginine Aspartic Acid Alanine
- Which of the following amino acids is not part of tetramer that is bounded to NAM and glycine? L-Glu D-Ala L-lys D-Glu L-AlaWhich of the following group(s) can be found in both an amino acid and a protein? a. Rgroup (side chain) only b. Free amino group and carboxyl group c. Free amino group, free carboxyl group and R groups d. Carbonyl group and free amino group and R groupsWhich of the following amino acids contains an R group that can form hydrogen bonds? A.isoleucine B.tyrosine C.glutamine D.asparagine E.alanine
- Which one of the following is an example of essential amino acid? Leucine Aspartic acid Arginine AlanineDescribe the amino acid illustrated above (at pH = 7.0). (the following amino acid at pH = 7 (aqueous form): (COO-)–CH(NH3+)–CH2–(COO-)) it is a non-polar, positively-charged amino acid it is a polar, positively-charged amino acid it is a polar, uncharged amino acid it is a polar, negatively-charged amino acid it is a non-polar, negatively-charged amino acidWhich amino acid has a guanidino group? Histidine Arginine Tryptophan Aspartic acid Which amino acid has a polar non-titratable R group? Arginine Histidine Proline Serine