Amino acids are different from each other by: Oa. The presence of a central alpha C atom. o b. The amino acids R group. O c. The long carbon-hydrogen tails of the molecule. d. The glycerol molecule that forms the backbone of the 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 & cIdentify 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 GroupThe presence of a core alpha C atom distinguishes amino acids. o b. R group amino acids The molecule's lengthy carbon-hydrogen tails. d. The amino acid's glycerol backbone.
- Which of the following statements about amino acids is true? A. Twenty two amino acids are commonly found in proteins. B. Amino acids are often linked together to form branched polymers. C. All amino acids contain an NH2 and a COOH group. D. Most of the amino acids used in protein biosynthesis have charged side chains.Which of these are considered “part” of each amino acid? A. Carboxyl acid group B. All of the options are correct C. R Group D. Amino groupBelow are two amino acids at physiological pH. Number labels are for part c. Answer the following questions about the side chains of these amino acids. H C. H;N* 2 CH2 A H H3N* C 3 CH2 В 4он В a. Which amino acid has a polar side chain? b. Which amino acid is more soluble in water? B c. Select the atom that serves as the hydrogen bond donor in the amino acid's R group.
- During the formation of the peptide bond which of the following takes place? A. Hydroxyl group is lost from its Carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid B. Hydrogen atom is lost from its Carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid C. Hydroxyl group is lost from its Carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid D. Hydrogen atom is lost from its Carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acidThe chemical differences between one amino acid and another isdue to which of the following?a. amino group b. carboxyl groupc. R group d. peptide bond e. carbon atomsDuring the formation of the peptide bond which of the following takes place? Select one: a. Hydroxyl group is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid b. Hydrogen atom is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid c. Hydroxyl group is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid d. Hydrogen atom is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid Clear my choice
- Which of the following fusion of molecules establishes the backbone of an amino acid? 1. An alpha carbon, a carboxyl/carboxylic acid group and, an amine/amino group 2. A phosphate group, an alcohol sugar like glycerol and, a saturated and an unsaturated fatty acid 3. An alpha carbon, a carboxyl/carboxylic acid group, an amine/amino group, and an R group, for example: the methyl group of the amino acid alanine 4. An alpha carbon, a carboxylic acid group, an amine/amino group and, an R group, for example: hydrogen of the amino acid glycineWhich of the following statements about amino acids is/are incorrect? 1. Standard amino acids are so named because these are the only amino acids there are. 2. Essential amino acids can be synthesized by the organism. 3. All standard amino acids are optically active. 4. Overall, naturally occurring amino acids are equally likely to be found having either an R or S configuration around the alpha carbon. O 1, 3, and 4 O 1, 2, 3, and 4 1 and 2 O 1, 2, and 3At 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 group