110%20Exam1%20F08%20B%20ans.doc

110%20Exam1%20F08%20B%20ans.doc - Exam I Biology 111 Fall...

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Exam I Biology 111 – Fall 2008 Dr. David Bos INSTRUCTIONS: Fill in your BIOL 110 code number and NOT your PUID in the section of the scantron sheet marked: Student Identification Number. The use of calculators, cell phones or other electronic devices is not allowed during the exam. Read each question carefully and choose the best answer. There are 33 questions on this exam. There is only one correct answer for each question. Do not fill in multiple answers, as they will be marked incorrect. Turn in only the answer sheet when you are done. You may keep the exam. Take your time, think and good luck! 1. Because you want to be as prepared as possible for Biology 110, you want to find out if this weeks’  recitation will include a quiz or a discussion.  The best course of action is to: a. Get that info by emailing Melissa  b. Email Dr. Bos or ask him after class c. Email Dr. Browning—he’s a wealth of knowledge! d. Just cowboy up and go to recitation.  There is no way to find out that information ahead of time e. Consult page x (Roman numeral 10) of the Read Me First document 2. In comparing two atoms, you discover that atom #1 has 13 protons and a mass of 26.  Atom #2 has 13  protons and a mass of 27.  From this you can reasonably conclude: a. Atom #2 is a radioisotope of atom #1 b. Atom #2 carries a charge c. The two atoms are different elements d. The two atoms are isotopes of the same element e. These atoms will likely form ions by gaining electrons to fill their outer energy shell 3. Chemical reactivity is best predicted by: a. the isotopes of that element b. the charge of the protons in the nucleus 1
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c. the filling of outer energy shells d. electrons closest to the nucleus e. the number of neutrons in the energy shells 4. Carbon (4 electrons in outer shell)-nitrogen(3 electrons in outer shell) (CN) compounds are common in  biochemistry and bonded through a. Ionic bonds, formed by nitrogen gaining the valence electrons from carbon b. Nonpolar covalent bonds c. Polar covalent bonds with carbon having a partial negative charge d. Polar covalent bonds with nitrogen having a partial negative charge e. Hydrophobic interactions because of the equal sharing of electrons 5. A liquid solution with a hydrogen ion [H + ] concentration of 10 -9  is a. Basic, with a pH of 9 b. Acidic, with a pH of 9 c. Neutral d. Basic, with a pH of 10 e. Acidic, with a pH of 10 6. When adding another acid (for example, HCl) to weak acid solution, you expect the weak acid to a. Accept more protons [H +  ions], lowering the pH dramatically b. Accept more protons, keeping the pH relatively unchanged
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This note was uploaded on 07/08/2010 for the course BIO 111 taught by Professor Dr. bos during the Spring '10 term at Purdue.

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110%20Exam1%20F08%20B%20ans.doc - Exam I Biology 111 Fall...

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