Which component of an amino acid confers its uniqueness with respect to other amino acids? In other words, which component is unique to each different amino acid?
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- Which 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 & cWrite the structure, identify the R groups and describe the chemical properties of these amino acids. A. Alanine B. Serine C. SucroseIdentify the components that are consistent between all 20 amino acids in the body. SELECT ALL THAT APPLY A. An amino group B. An Alpha-carbon C. A Carboxyl Group D. A Side chain R Group
- Write down the structure of the amino acid asparagine and explain why you would classify it as an acidic, neutral or basic amino acid. (Identify which of the following pairs of amino acid residues can have hydrogen bonding between their side chains. A. Alaine and Glycine B. Leucine and Isoleucine C. Valinc and Asparaginc D. Threonine and TryrosineAmino acids differ because they are very “R” groups. Is this a result of amino acids ability to form peptide bonds? True or false
- 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 groupAmino acids have the generic structure, where R represents different carbon-based side chains. Describe how the structure of amino acids allows them to be linked into long peptide chains to form proteins. Make an imaginary peptide chain or protein molecule.What is the chemical difference between cellulose and chitin? Select one: a. Replacement of the hydroxyl group at C5 with an acetylated amino group b. Replacement of the hydroxyl group at C3 with an acetylated amino group c. Replacement of the hydroxyl group at C4 with an acetylated amino group d. Replacement of the hydroxyl group at C2 with an acetylated amino group
- Which type of amino acid would you expect to find in large numbers in a protein found in a deep-sea hydrothermal vent (a very hot environment)? A. Hydrophobic amino acids B. Cysteines C. Nonpolar amino acids D. Polar amino acidsWhich of the following group(s) are present in natural amino acids: b. Tetrapyrrole group d. Guanidinium group a. Imidazole group c. Indole group e. Keto groupClassify each of the following amino acid as polar or nonpolar. If polar, indicate if the R group is neutral, acidic, it basic. Indicate if each is hydrophobic or hydrophilic. a. lysine b. arginine c. methionine d. tyrosine
