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CH369 exam1s03 - Multiple Choice 1 Which organelle is...

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Multiple Choice 1. Which organelle is involved in the synthesis of ATP? a. Nucleus b. Mitochondrion c. Chloroplast d. ATP is synthesized in both mitochondria and chloroplasts. e. ATP is synthesized in all three organelles. 2. The pH of a solution of 0.04 M HCl is: 3. An HCl solution has a pH = 3.0. If you dilute 10 ml of the solution to 1000 ml, the final pH will be: 6. The pKa of a weak acid is: The choices are: 1. Its dissociation constant 2. The pH at which the concentrations of conjugate acid and base are equal 3. Found at the midpoint of the titration curve The answer is 7. Which amino acid has a benzene-like ring? a. Glutamic acid b. Histidine c. Isoleucine d. Serine e. Tyrosine 8. Which amino acid has an R-group which contains only C and H?
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Amino acid α -amino group pK α -carboxyl group pK R-group pK Ala 2.3 9.7 Arg 2.2 9.0 12.5 Asn or Gln 2.1 9.0 Asp or Glu 2.2 9.8 4.0 Cys 1.7 10.8 8.3 His 1.8 9.2 6.0 Ser 2.2 9.1 Tyr 2.1 9.1 10.1 9. Referring to the above table: What is the order of the pIs in increasing order (from acid to base)?
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