An amino acid structure contains a -COOH and -NH2 group in the same molecule. The -COOH group donates a proton to the -NH, group. Because of this, the amino acid structure contains a positive charge on one atom and a negative charge on the other. What is the term used to refer to this character of amino acids? O Amphiphatic O Isoelectric point O Zwitterions Amphoteric
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- Some amino acids are synthesized by replacing the keto group (CO) of an organic acid known as an α-keto acid with an amino group (CNH+3). Identify the amino acids that can be produced this way from the following α-keto acids: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 onlyWhich of the following statements is true about amino acids? a. All twenty (20) of these protein-derived amino acids are a-amino acids, meaning that the amino group is located on the carbon alpha to the carboxyl group. b. For nineteen (19) of the twenty (20) amino acids, the a-amino group is primary. Glycine is different; its a-amino group is secondary. c. With the exception of proline, the a-carbon of each amino acid is a chiral center. As shown in Table 27.1, all 19 chiral amino acids have the same relative d. Both a & c
- At the center of all 20 standard amino acids is what is termed the a-carbon that is covalently bonded with four other chemical groups. Which of these four chemical groups is not a normal component of all amino acids? A. an amino group B. a carboxyl group C. a side chain (R group) D. a methyl groupwhich of the following statements is correct regarding the affect of pH on the ionization of R groups in amino acids. Put yes or no next to each number. 1) at an acidic pH, amino groups in an R group tend to lonize by accepting a proton and have a positive charge2) at an acidic pH, carboxyl groups in an R group are likely to be in an unionized state.3) at an alkaline pH, amino groups in an R group have a tendency to remain unionized (and uncharged).4) at an alkaline pH, carboxyl groups in an R group have a tendency to lonize by loosing a hydrogen ion (H+)5) R groups that do not have an amino or carboxyl group do not ionize at pH of the environment changes.Which of the following amino acids have R groups that have hydrogen- bonding potential? Ala, Gly, Ser, Phe, Glu, Tyr, Ile, and Thr
- Attach an amino acid with the “-SH” functional group below. (not super long answers please) What is the name of the -SH functional group? What level of protein structure is determined by these amino acids? ExplainGiven the following decapeptide sequence, which aminoacids would you expect to be on the surface of this moleculeonce it folds into its native conformation?Gly—Phe—Tyr—Asn—Tyr—Met—Ser—His—Val—LeuWhich of the following amino acids is the most hydrophobic? OS O A OP
- 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-AlaMatch the amino acid description with their 3-letter abbreviation has the guanidino group on its side chain Has the phenolic group side chain is a methyl group Capable of forming a covalent bond Acidic amino acid A. Arg B. Tyr C. Ala D. Cys E. Asp F. PheWhich 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 groups