BIO311c-Exam2-Fall2007 - BIO 311 c Introductory Biology I...

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BIO 311 c Introductory Biology I K. Sathasivan Fall 2007 EXAM 2 NAME _____________________________________ EID __________________ Discussion section Registered (Day and time) ____________________. ! Write your name, EID, course # and discussion section registered on scantron form and on the exam paper. ! After completion, return the scantron form and exam paper to the proper discussion section that you are registered in. ! If you have comments on any of the questions about this exam, please write them in this page and submit. Signature
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BIO 311c Exam 2 K. Sathasivan Fall 2007 EXAM 2 Read each question carefully before you select the best answer for questions 1-52 and fill in the appropriate blank in the scantron form with a #2 pencil. Each question is worth 2.0 points. Answer all questions. The best 50 questions will be considered for a maximum of 100 points. 1. Most cells are small because as they become larger, their surface area to volume ratio A) increases B) decreases C) stays the same D) is squared E) is cubed 2. When proton pump inhibitors are used, the enzymes in this structure lose their ability to degrade macromolecules. What is this structure? A) liposomes B) nucleus C) vacuoles D) lysosomes E) ribosomes 3. The “cell theory,” in its modern form includes all of the following postulates except A) All organisms are composed of one or more cells. B) All cells need oxygen. C) Cells are the smallest living things. D) Cells arise only by division of a previously existing cell. E) Cell is the unit of life. 4. Eukaryotic organisms have compartmental structures within their cells. All the following are advantages of having such compartments except for ________. A) providing greater surface area B) separating reactions such as respiration C) transporting material through the membranes D) maintain specific concentrations of ions E) increasing functional specialization 5. You would be wasting your time if you were trying to use a light microscope to see_________ A) ribosomes B) animal cells C) bacteria D) yeast cells E) potato cells 6. In agarose gel electrophoresis, DNA or RNA fragments move towards ___________ end of the gel plate because of their____________. A) the neutral…. . charge B) the anode …. . size C) the cathode …. . charge D) the anode …. . charge E) the neutral …. . size 7. You would not expect to find RNA in the/a_____________ A) Nucleus B) Mitochondrion C) Ribosome D) Bacteria E) Vacuole 2
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BIO 311c Exam 2 K. Sathasivan Fall 2007 For questions 8-10, use the given answers and table. Each answer may be used once, more than once, or not at all. A) Bacteria only B) Archaea only C) Eukarya only D) A and B are possible E) B and C are possible Comparison of the three domains of life Characteristic Bacteria Archaea Eukarya Nuclear envelope Absent Absent Present Membrane-enclosed organelles Absent Absent Present Peptidoglycan in cell wall Present in most Absent Absent Membrane lipids Unbranched hydrocarbons Some branched
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BIO311c-Exam2-Fall2007 - BIO 311 c Introductory Biology I...

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