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2005FinalKey - Name(Last name first Student Number Biology...

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1 Name (Last name first): _______________________________________ Student Number:_____________________ Biology 200 Final Exam Dec. 15, 2005 1. Write all answers on the exam in PEN. Do not use pencil or red pen. 2. Write your name and student registration number on this exam AND on the Exam booklet. 3. You will have 2.5 hours to take this exam. 4. Place your student card on the table in front of you for checking during the exam. 1 2 3 4 5 6 7 8 9 10 11 12 Total 10 4 4 5 6 9 8 10 6 10 8 20 100 Question 1. (10 marks) Circle the correct answer on the exam. A. What are the molecular components of ATP? a. adenine, thymine, and phosphates b. adenine plus three phosphates c. adenine, ribose and three phosphates 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 e. Intermediate filaments E. What directly controls the assembly/disassembly state of lamins? a. ATP b. GTP
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2 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. Elimination of introns via the splicing 2. Addition of 3’ polyA tail 3. Addition of 5’ cap 4. Export to the cytosol compartment via nuclear pores 5. Small ribosome subuint binding to mRNA/initiation complex/Met tRNA 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 C. Antiport D. Symport E. Uniport 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 E (0.5 pt) Question 4. (5 marks) Fill in the following table: Movement of cilia Movement of skeletal muscle Cytoskeleton filament type microtubules microfilaments Protein subunit of the filament tubulin actin Nucleotide that regulates filament polymerization GDP/GTP ADP/ATP Motor protein used dynein myosin
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3 Fuel molecule used for movement ATP ATP Question 5. (6 marks) In the absence of functional microtubules, name 3 specific mitotic events (not stages) that would take place and 3 specific mitotic events (not stages) that would NOT occur?
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