Biology_200_Final_Examanswers

Biology_200_Final_Examanswers - Biology200FinalExam...

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Biology 200 Final Exam   Dec. 15,   2005 Final Exam average = 69.2% Course Average = 71.0% Median = 73% Distribution of course marks     Mark Range Number Percentage 80+ 71 27.8 70-79 81 31.8 60-69 58 22.7 50-59 22 8.6 >50 22 8.6 Question 1.    (10 marks)  Circle the correct answer on the exam. (2 marks each) A. What are the molecular components of ATP? a. adenine, thymine, and phosphates b. adenine plus three phosphates c. adenine, ribose and three phosphates
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d. alanine, ribose and three phosphates e. alanine, threonine and phosphate B. A yeast strain that has a mutation that prevents vesicle fusion with the plasma  membrane may have a mutation in the gene that codes for: a. Clathrin b. COP protein c. Dynamin d. Adaptin e. V-SNARE C. What keeps the Golgi apparatus in the middle of the cell, and away from the  periphery? a. Intermediate filaments b. Kinesin c. Dynein d. Myosin e. Actin D. Which one of the following internal structures is most likely to be used by a white  blood cell to engulf an infectious bacterium? a. Actin filaments b. Keratin filaments c. Microtubules d. Myosin filaments
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e. Intermediate filaments E. What directly controls the assembly/disassembly state of lamins? a. ATP b. GTP c. Phosphorylation d. Proteolysis e. NLS Question 2.   (4 marks)  List 4 processes that take place in eucaryotic cells after  production of the mRNA primary transcript and before protein synthesis.  (1 mark each) 1.  Elimination of introns via the splicing process on spliceosomes 2.  Addition of 3’ polyA tail 3.  Addition of 5’ cap 4.  Export to the cytosol compartment via nuclear pore complexes 5. Binding of initiation factor to 5’ cap 6. Binding of mRNA to small ribosomal subunit 7. binding and initiation factor and N-formal-methionine tRNA to  small subunit and  mRNA Question 3.   (4 marks)  In the table below indicate which type of pump or carrier (A, B,  C, D or E) corresponds to the description. A. Na + /K +  pump B. H+ pump
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C. Antiport D. Symport E. Uniport (1 mark each) Description Fill letter A-E Movement of glucose into intestinal epithelial cells from the intestinal  lumen; allows movement of glucose up its concentration gradient D Movement of glucose out of intestinal epithelial cells toward the blood  supply; allows movement of glucose down its concentration gradient E Maintains the ion gradient that allows glucose to move into intestinal  epithelial cells against its concentration gradient A Maintains the acidic environment of the lysosome  B Question 4. (5 marks) Fill in the following table: (1/2 mark for each correct answer) Movement of cilia Movement of skeletal  muscle Cytoskeleton filament type microtubules microfilaments Protein subunit of the 
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This note was uploaded on 12/13/2011 for the course BIOLOGY 300 taught by Professor Asdf during the Spring '08 term at UBC.

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Biology_200_Final_Examanswers - Biology200FinalExam...

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