2010_exam2_KEY_fall2010_Darner

2010_exam2_KEY_fall2010_Darner - DO NOT OPEN THIS EXAM...

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DO NOT OPEN THIS EXAM UNTIL YOU ARE TOLD TO DO SO. BSC 2010 Exam 2 NAME: _________________________________________________________________________________________________ INSTRUCTIONS: With a #2 pencil, complete your scantron with your name, UF ID, and section (2324). After you are allowed to begin the exam, choose the best response for each question and fill in the corresponding bubble on your scantron form. Each question is worth 3 points. WHEN YOU ARE FINISHED: Turn in your scantron AND paper exam to a proctor at the front of the room. Have your ID ready. Exit out the doors at the front of the lecture hall. An exam key will be available online in about one week. 1. Drug “X” blocks the function of actin. Which stage of the cell cycle would be the most affected by the drug?
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A. prophase B. metaphase C. anaphase D. prometaphase E. telophase and cytokinesis 2. Psoriasis is a dominant condition in which an individual has severe skin blotting. A father with psoriasis and a mother with a normal phenotype have one son without psoriasis. What is the probability that a second child will not have psoriasis? A. ¼ B.1/3 C. ½ D.9/16 E. 3/16 3. Many mosses undergo alternation of generations. From this you can infer that A. after meiosis, the spores are fertilized with no mitosis, and then the zygote undergoes mitosis. B. after fertilization, the zygote immediately enters meiosis, and then the spores undergo mitosis. C. after meiosis, the spores undergo mitosis, then fertilization, and then the zygote undergoes mitosis. D. no mitosis is required during the life cycle. E. no meiosis is required during the life cycle. 4. Active sites of aminoacyl-tRNA synthetase fit specific combinations of amino acid and tRNA. Why are there 20 different synthetases? A. two for each amino acid B. one for each amino acid C. two for each anticodon D. one for each anticodon E. two for each ribosome 5. Mendel decides to do different crosses between two pea plants. The results he found are shown in the table. What is the possible chance of getting the combination PpTtRR? Genotype Probability PP 1/2 Pp 1/2 TT 1/4 Tt 3/4 RR 1/4 Rr 3/4 A. 5/32 B. 1/32 C. 1/2 D. 3/32 E. 7/31 6. In a viral envelope, the protein parts of envelope’s glycoproteins are made by A. ribosomes bound to the ER of the virus. B. free ribosomes in the cytoplasm of the host. C. ribosomes bound to the ER of the host organism. D. ribosomes bound to the plasma membrane of the virus. E. ribosomes bound to the nuclear envelope of the virus. 7. Herpes is a virus that enters the human body and remains dormant in the nervous system until it produces an outbreak. Which of the following can you infer from this information? A. Herpes integrates itself into the RNA of a cell.
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This note was uploaded on 09/05/2011 for the course BSC 2010 taught by Professor Bowes during the Fall '08 term at University of Florida.

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2010_exam2_KEY_fall2010_Darner - DO NOT OPEN THIS EXAM...

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