Exam 1 Spring 2009

Exam 1 Spring 2009 - BIOLOGY 311C Brand Spring 2009...

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BIOLOGY 311C - Brand Spring 2009 NAME (printed very legibly) _________________________________________ UT-EID ________________ EXAMINATION I Before beginning, check to be sure that this exam contains 7 pages (including front and back) numbered consecutively, and that you have been provided with a clean Answer Sheet. Then immediately print your name and UT-EID legibly at the top of this page. Also print and bubble in your name and your UT-EID (not your social security number) on the front of the Answer Sheet in the spaces provided. The first 38 questions are “multiple choice”, with only one correct answer. Mark the letter corresponding to the correct answer to each of these questions in the appropriate location on the Answer Sheet, using a No. 2 pencil. Write answers to Questions 39 – 42 directly on this exam, in the spaces provided with the questions. Print neatly if your handwriting is likely to be difficult to read. Turn in both this exam and the Answer Sheet after checking to be sure that your name is clearly written in both places and all questions have been answered in the appropriate locations. You must turn in your exam on or before 9:55 a.m. 1. A divalent cation contains: a. a total of two electrons. b. a total of two protons. c. two net positive charges. d. two net negative charges. 2. If a hydrogen molecule is separated into its two separate atoms such that each atom keeps one of the previously shared electrons, then: a. each of the atoms can be written as H + . b. one of the atoms is an anion while the other atom is a cation. c. both atoms will be an electrically neutral hydrogen atom. d. each of the separated atoms will be chemically stable. 3. Which one of the following atoms, when it occurs in biological molecules, does not have a covalency higher than 2? a. S b. N c. P d. C 4. Most of the largest molecules in living cells: a. simultaneously carry multiple positive and negative electric charges. b. carry a few (3 – 10) electric charges. c. do not carry any net electrical charge. d. have a net positive charge. 5. An illustration of a molecule that demonstrates its three-dimensional shape is called a: a. chemical formula. b. geometric formula. c. structural formula. d. stereo formula. 6. Which one of the following is considered to be an organic compound? Spring 2009 Exam 1 p. 1 BIO 311c Brand
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a. H 2 O b. CO 2 c. CH 3 -NH 2 d. H 2 CO 3 7. Which one of the following functional groups is illustrated in the molecule shown in abbreviated form at right? a. An alcohol
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Exam 1 Spring 2009 - BIOLOGY 311C Brand Spring 2009...

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