BIOCHEMISTRY I EXAM I PRACTICE

BIOCHEMISTRY I EXAM I PRACTICE - BIOCHEMISTRY I, PRACTICE...

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BIOCHEMISTRY I, PRACTICE QUESTIONS Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Covalent forces a. are intramolecular forces c. are both intra and intermolecular forces b. are intermolecular forces d. none of the above ____ ____ 2. Living systems are characterized by these, EXCEPT a. Organisms are complicated and highly or- ganized c. Living systems are always at equilibrium b. Biological structures serve functional pur- poses d. Living systems are able to replicable ____ 3. Carbon is essential for life is because a. it has four bonds c. it can be used to make CO 2 b. it makes versatile, complex structures d. none of the above ____ 4. One of these bonds is not capable of hydrogen bonding a. C-H c. N-H b. O-H d. F-H ____ 5. Oil in water a. organizes the water molecules c. make water stable b. disorganize the water molecules d. none of the above ____ 6. the pH of a 0.05M solution of Ca(OH) 2 is a. 1 c. -1.3 b. 13 d. 5 ____ 7. The ionization constant of pure water is a. 1 x 10 -7 c. 1 x 10 -14 b. 1 x 10 7 d. 1 x 10 14 ____ 8. Which of the following pKAs represents the strongest acid? a. 3 c. 5 b. 6 d. 10 ____ 9. For a weak acid and its conjugated base the following is true a. K AH x K A- = 10 -14 c. pKa + pKb = 14 b. pH = pKa + Log [A-]/[AH] d. all are true ____ 10. If equal volumes of 0.8M sodium lactate and 0.4M lactic acid are mixed, and the pKa of lactic acid is 3.86,
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This note was uploaded on 10/05/2010 for the course BCH 3033 taught by Professor Haces during the Spring '10 term at FAU.

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BIOCHEMISTRY I EXAM I PRACTICE - BIOCHEMISTRY I, PRACTICE...

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