MCB450_Exam1_FA08 - Name Multiple-Choice 3 points each For...

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1 Name ______________________________ Multiple-Choice, 3 points each For each of the following questions, encircle the letter corresponding to the BEST response. 1. Which of the following INCORRECTLY pairs an organelle, or a cell part, with its function? A. Lysosome: Hydrolysis of macromolecules B. Nucleus: Repository of genetic information C. Nucleolus: Site of tRNA synthesis D. Golgi: Attachment of carbohydrate to protein E. Rough endoplasmic reticulum: Synthesis of protein for export. 2. The pI of a protein is the ________________________________. A. pK value of the functional groups attached to the α -carbon. B. pH value at which it has no charge. C. pH value at which the protein is generally most soluble. D. pH value at which its net charge is zero. E. net pK value of all the ionizable side chains and R-groups. 3. For molecular interaction forces, which is the correct order (from the strongest to weakest interactions)? A. Hydrogen bonds > Hydrophobic interactions > Van der Waals interactions B. Hydrophobic interactions > Hydrogen bonds > Van der Waals interactions C. Van der Waals interactions > Hydrophobic interactions > Hydrogen bonds D. Hydrophobic interactions > Van der Waals interactions > Hydrogen bonds E. None of the above are correct. 4. Into which functional category should cysteine be placed? A. Hydrophobic, non-polar B. Acidic C. Basic D. Polar, uncharged
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2 Name ______________________________ 5. Alanine is similar to serine in the same way that _____________________. A. Ser is similar to Thr. B. Phe is similar to Trp. C. Phe is similar to Tyr. D. Val is similar to Thr. 6. Secondary structure in a protein is primarily maintained by _______________. A.
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This note was uploaded on 09/14/2009 for the course MCB 450 taught by Professor Mintel during the Summer '07 term at University of Illinois at Urbana–Champaign.

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MCB450_Exam1_FA08 - Name Multiple-Choice 3 points each For...

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