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Quiz5_Ans - BioBM 432 Survey of Cell Biology Quiz#5...

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BioBM 432 Survey of Cell Biology Quiz #5 Wednesday April 11, 2007 Name ______out of 14 points_____ True or False: 1. F ____Protein disulfide isomerase (PDI) is an enzyme that helps cytoplasmic proteins fold properly. 2. F ____ ESCRT proteins help guide secretory vesicles from the Trans-Golgi Network (TGN) to the plasma membrane. 3. F ____ The translocon (Sec61 protein) is the ER membrane receptor for the signal recognition particle (SRP). 4. F ____ One step in N-linked glycosylation is the addition of a preformed 14-sugar residue unit to the N-terminus of the nascent polypeptide as it is being extruded into the ER. 5. T ____ UDP-sugars and CDP-sugars are transported into the lumen of the endoplasmic reticulum. 6. N.C. means this question was not counted. 7. F ____ Dynamin is a Ras-related GTPase that, when in the active conformation, promotes disassembly of the clathrin coat surrounding vesicles after they have pinched off in endocytosis. 8. F ____ The temperature sensitive G protein (tsO45) of vesicular stomatitis virus (VSV) accumulates in the trans-Golgi network (TGN)
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