2009Exam1AnswerKey

2009Exam1AnswerKey - First Hourly Examination BISC 220...

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Unformatted text preview: First Hourly Examination BISC 220 Spring 2009 13 February 2009 Name____ _ANSWER KEY_ _______ ID Number_____________________ This examination has 10 pages and 45 questions. Be sure you have a complete examination. Please put your name and USC ID number on the top of each page. Remember to use your time wisely during the examination period. Good luck from all your teaching staff. The following 40 multiple choice questions are worth 3 points each. Please choose the one best answer, and enter your choice on a Scantron sheet using ONLY a #2 pencil. 1. An example of a hydrogen bond is the bond between a. C and H in methane (CH 4 ). b. the H of one water molecule and the O of another water molecule. c. Na + and Cl- in salt. d. the two hydrogen atoms in a molecule of hydrogen gas (H 2 ). e. Mg + and Cl- in MgCl 2 . 2. When two atoms are equally electronegative, they will interact to form a. equal numbers of isotopes. b. ions. c. polar covalent bonds. d. nonpolar covalent bonds. e. ionic bonds. 3. The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are the form. Which of the following could amylase break down? a. glycogen, starch, and amylopectin b. glycogen and cellulose c. cellulose and chitin d. starch and chitin e. starch, amylopectin, and cellulose 4. The R group or side chain of the amino acid lysine is -(CH 2 ) 4-NH 2 . The R group or side chain of the amino acid alanine is -CH 3 . Where would you expect to find these amino acids in a globular protein in aqueous solution? a. Lysine would be in the interior, and alanine would be on the exterior of the globular protein. b. Alanine would be in the interior, and lysine would be on the exterior of the 1 First Hourly Examination BISC 220 Spring 2009 13 February 2009 Name____ _ANSWER KEY_ _______ ID Number_____________________ This examination has 10 pages and 45 questions. Be sure you have a complete examination. Please put your name and USC ID number on the top of each page. Remember to use your time wisely during the examination period. Good luck from all your teaching staff. globular protein. c. Both lysine and alanine would be in the interior of the globular protein. d. Both lysine and alanine would be on the exterior of the globular protein. e. Both lysine and alanine would be in the interior and on the exterior of the globular protein. 5. What is the molecule illustrated above ?...
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2009Exam1AnswerKey - First Hourly Examination BISC 220...

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