Amino acids are biological compounds that link together to form proteins, the workhorse molecules in living organisms.

The skeletal structures of several simple amino acids are shown here. For each skeletal structure, complete the Lewis structure, determine the geometry and hybridization about each interior atom, and make a sketch of the molecule, using the bond conventions of Section 11.4.

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HO | || H₂N-C-C-OH CH₂ | OH (a) serine CH₂ HO | || H₂N-C-C-OH CH₂ Η Ο || H₂N-C-C-OH | SH (c) cysteine C=O NH₂ (b) asparagine