BIOL 0280 Midterm: Exam1 2008 key
Document Summary
Make sure that your name is on every page. This is the only way we have of matching you with your exam after grading it. Unless otherwise indicated, there is only one correct answer for each multiple choice question. Points are indicated by the question within brackets []. there are no calculators or other electronic devices needed or allowed on this exam. Exams will be photocopied before being returned on thursday. Circle the correct answer: [2 points] of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________: alanine; is a simple methyl group, glycine; is a hydrogen atom, glycine; is unbranched, lysine; contains only nitrogen, proline; forms a covalent bond with the amino group. Circle the correct answer: [5 points] draw a peptide bond. Include the c atoms of the neighboring residues, and show their side chains as r. draw all hydrogens.
