mid1-key

mid1-key - NAME 1 st MIDTERM 1 BILD1 Fall 2007 ID NUMBER...

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MIDTERM 1 BILD1 Fall 2007 NAME __________________________ Page 1 of 8 ID NUMBER________________________ 1 st MIDTERM BILD1 Fall 2007 WAIVER: (please sign): By signing this waiver I give permission for this exam to be handed back to me in class and acknowledge that this may expose my score to view by other students. If I do not sign this waiver, I acknowledge that my exam will be available for pickup after class at 2140 Pacific Hall. Signature_______________________________________ PAGE 2 [problem 1] _____________ (11pts) ________ PAGE 3 [problem 2,3] ______________ (13pts) _______ PAGE 4 [problems 4,5] ______________ (15pts) ______ PAGE 5 [problem 6,7] ______________ (18pts) ________ PAGE 6 [problems 8, 9] ______________ (15pts) _______ PAGE 7 [problems 10,11] ______________ (17pts) ______ PAGE 8 [problems 12] ______________ (11pts) ______ TOTAL out of 100 --------------------
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MIDTERM 1 BILD1 Fall 2007 NAME __________________________ Page 2 of 8 O OH HO O OH OH Problem 1. Hydrogen Bonds and Biology Part A. Answer the following questions about molecule A shown below. (2pt) How many atoms in the structure of molecule A can donate a hydrogen bond? _ _ 4 __ atoms (2pt) How many atoms in the structure of molecule A can accept a hydrogen bond? _ _ 6 ___ atoms (2pt) At pH 7 will this molecule ionize? (Yes or No) ___ No _____ Part B . Below are the structures of two compounds with the chemical composition C 3 H 6 O (2pt) Based on what you learned in class, which of these two molecules is MOST soluble in water? ____Molecule II__ (3pt) Why is one molecule more water soluble than the other? Explain your answer using terminology like that used in Problem 1, Part A . Molecule II is more soluble becuase it can donate and accept a hydrogen bond O || H 3 C-C-CH 3 HOCH 2 -CH = CH 2 Molecule 1 Molecule 2
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MIDTERM 1 BILD1 Fall 2007 NAME __________________________ Page 3 of 8 Hyrdrophilic head (water Hyrdrophobic core (water Problem 2. Emergent properties of Chemistry and Biology (5pts) Place the following terms below in the most logical order. I will give you one (a free point). Macromolecules
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mid1-key - NAME 1 st MIDTERM 1 BILD1 Fall 2007 ID NUMBER...

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