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: a. 4 b. 1.4 c. 0.4 d. 0.04 e. The pH cannot be determined 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: a. 1.0 b. 2.0 c. The pH does not change d. 4.0 e. 5.0 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 a. 1 b. 2 c. 3 d. Both 2 and 3 e. All of these are correct 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? a. Glutamic acid b. Histidine c. Isoleucine d. Serine e. Tyrosine
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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)? a. Alanine, arginine, asparagine, cysteine and aspartic acid b. Aspartic acid, alanine, asparagine, cysteine and arginine c. Aspartic acid, cysteine, asparagine, alanine, and arginine d. Arginine, alanine, asparagine, cysteine, and aspartic acid e. Aspartic acid, cysteine, arginine, alanine, and asparagine
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This note was uploaded on 03/30/2010 for the course CH 369 taught by Professor Kbrowning during the Spring '07 term at University of Texas at Austin.

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

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