fINAL EXAM 1

fINAL EXAM 1 - Final Exam BIO201B 2009 Each question has...

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Final Exam BIO201B, 2009 form 1 Each question has only one right answer. Choose the best answer for each. 1. Clathrin coated vesicles can be made from: A. Rough endoplasmic reticulum (RER) membranes B. Cis-golgi but not trans-golgi membranes C. The plasma membrane D. VTC of the ERGIC E. Smooth endoplasmic reticulum (SER) membranes 2. Moving a soluble protein from cis-golgi to medial-golgi requires all of the following except: A. A transmembrane cargo receptor B. Synthesis of that protein in RER C. Transition vesicles D. Membrane budding and membrane fusion E. Autophagosomes 3. Why would a coated vesicle go from cis-golgi to rough endoplasmic reticulum (RER)? A. They don’t. They can go from RER to cis-golgi but not the other way B. To pick up proteins with KDEL sequences and bring them to the cis-golgi C. Because it contained lysosomal enzymes D. Because the t-SNARE on the golgi vesicle matched the V-SNARE on the RER. E. To return enzymes back to the RER that accidentally got into the cis-golgi 4. Lysosomal enzymes: A. Function best when the [H+] is low B. Are made in the cytoplasm but they need a special localization signal C. Can have a signal sequence but no stop transfer sequence D. Are glycoproteins made in the RER E. Can be seen in COPII vesicles but not in clathrin-coated vesicles 5. Dead mitochondria are removed from the cell by: A. 12:30 every day B. Apoptosis C. Phagocytosis D. Autophagolysosomes E. Endocytosis 6. Nuclear division is seen in: A. Mitosis B. Prophase II of meiosis II C. Zygotene D. Interphase E. Cleveland 1
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7. In the original Meselson-Stahl experiment, bacteria were grown on 15 N and then switched to 14 N. If it was switched around so that the cells started in 14 N but were then changed to 15 N for one generation only , the DNA bands on the density gradient would look like: A. There would be no bands because the cells would die B. One hybrid band C. One heavy band and one light band D. One heavy band and one hybrid band E. One light band and one hybrid band 8. A culture of eukaryotic cells was grown in BrDU until all of the DNA contained BrDU. These BrDU labeled cells were then switched to a growth media with thymidine added instead of BrDU and the cells grew for two generations in thymine with no BrDU. If the mitotic chromosomes were stained so that any thymidine would be dark, which is most likely? A. All of the chromatids (compacted chromatin) of all of the mitotic chromosomes would be dark. B. Nothing. The DNA could not replicate in the presence of BrDU C. Each mitotic chromosome would have one dark chromatid and one light chromatid D. All of the chromatids would be light in each mitotic chromosome E. 50% of the mitotic chromosomes would be all dark and 50% would be all light 9. Cytokinesis is part of: A. M-phase B. Mitosis C. Diakinesis D. Telophase E. G1 phase 10. A mutation in a cell checkpoint protein like p27 in mice would be most likely to cause which of the following? A. Less cells in S-phase and less cell division
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This note was uploaded on 09/30/2010 for the course BIO 201 taught by Professor Janicke during the Spring '08 term at SUNY Buffalo.

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fINAL EXAM 1 - Final Exam BIO201B 2009 Each question has...

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