CHEM 2770 Midterm: CHEM 2770 39052 Exam
31 Jan 2019
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Instructions: please mark the answer sheet using pencil only, enter your name and student number on the answer sheet, the exam consists of multiple choice questions. Enter your answers on the answer sheet: there is only 1 correct answer for each question, please read each question carefully. An organized network of reactions that synthesize molecules and consume free energy is best described by the word: metabolism, condensation, catabolism, cannibalism, anabolism. Red wine at ph 3. 3 contains about ___ times as much h+ as skim milk at ph 6. 4: 1259, 3. 1, 31, 9. 7, 106. 4. The percentage of glycine molecules having an uncharged amino group at ph 10. 0 is close to? (pka values for glycine are 2. 35 and 9. 78. : 62, 38, 18, 50, 82% Which collection of amino acids is hydrophobic: ala, lys, val, pro, tyr, glu, gly, asp, gln, val, ile, ala, trp, tyr, asn. Which of the peptides would absorb light at 280 nm: val-pro-leu-gly-asp, ala-lys-his, ser-gly, tyr-ala, gly-gln-glu.
