Key Exam 2 - BIOLOGY 311C - Brand Fall 2010 NAME (printed...

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Fall 2010 Exam 2 p. 1 BIO 311c Brand BIOLOGY 311C - Brand Fall 2010 NAME (printed very legibly) _________________ Key ___________________ UT-EID ________________ EXAMINATION II 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 41 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 42 45 directly on this exam, in the spaces provided with the questions. 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. The most abundant component of the dry weight of living cells is: a. organic substances. b. inorganic ions. c. H 2 O. d. ATP. 2. Which one of the following functional groups would be expected to carry two electrical charges at pH 9? a. Secondary amine b. Carboxylate c. Ammonium ion d. Phosphate 3. Which one of the following would be expected to have the highest concentration of H 3 O + ? a. The cytoplasmic matrix of living cells b. A solution with a pH of 9 c. A 1 molar solution of dissolved pyrimidines d . A solution containing 10 -4 M H 3 O + 4. Which of the following pairs of substances would not be expected to be attracted together by polar bonding? a. Amine and carboxylic acid b. Water and a compound with a chemical formula of C 8 H 18 c. Alcohol and phosphate d. Simple sugar and amino acid 5. In which of the following locations would an electrovalent bond between two oppositely charged functional groups be strongest? a. Within the interior of a biological membrane b. In the cytoplasmic matrix of a living cell c. In an aqueous solution containing only water and two kinds of molecules containing the two functional groups d. In an aqueous solution within which the two functional groups are carried on the same molecule
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Fall 2010 Exam 2 p. 2 BIO 311c Brand 6. Which one of the following is an ion that occurs at lowest concentration within the cytoplasmic matrix of living cells? a. P
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Key Exam 2 - BIOLOGY 311C - Brand Fall 2010 NAME (printed...

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