FST100A MT1 F09 Key Dungan

FST100A MT1 F09 Key Dungan - Food Science & Technology...

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Food Science & Technology 100A Professor S.R. Dungan Midterm Examination #1 October 21, 2009 Name: KEY Last First Signature: INSTRUCTIONS PRINT your last and first names above. Then SIGN the exam copy. PRINT your name on the front of your Scantron #2000. MARK the test version that appears at the bottom of page 4 on your Scantron #2000. WRITE your student identification number in the appropriate area of your Scantron #2000 on Part 1 and follow the instructions to CODE your ID number in the bubbles. CHECK that there are 36 multiple choice questions. There are a total of 9 pages to this exam. Use a #2 pencil to mark your Scantron answers. You are responsible for the accuracy and completeness of your Scantron. Do not put any marks (other than filling in the answer bubbles) on the left side(s) of the Scantron sheet. Please respect the UC Davis Honor Code in the taking of this exam. This exam is closed book, closed notes. There should be plenty of time to take this exam without being rushed. However, you will need to use your time efficiently. Graded exams will be returned in class as soon as possible. Multiple Choice 85 Short answers 15 Total 100
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page 4 THIS IS THE BEGINNING OF THE MULTIPLE CHOICE SECTION OF THE EXAM. * 1. α -D-mannopyranose and α -D-glucopyranose a. are stereoisomers b. are epimers c. are anomers d. are enantiomers e. Answers a and b are both true @ The following 3 questions refer to the molecule at right: 2. During mutarotation , what is most likely to occur with this molecule? a. The –OH group on the C6 carbon attacks the carbonyl group b. The –OH group on the C5 carbon attacks the carbonyl group @ c. The carbonyl group becomes oxidized d. The –OH group on the C2 carbon rearranges its position e. The –OH group on the C3 carbon attacks the carbonyl group 3. During mutarotation , the straight chain molecule above could become which of the following structures? O OH HO OH HO CH 2 OH O OH OH OH HO CH 2 OH O OH HO OH HO CH 2 OH O OH CH 2 OH HO OH HO A B C D a. Molecule A only b. Molecules B, C and D only c. Molecules A and C only d. Molecules B and D only @ e. Molecules A and D only * Version D C C C C C CH 2 OH O H H HO H HO OH H OH H
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page 5 4. During isomerization , the straight chain molecule on the previous page could become which of the following structures? CH
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FST100A MT1 F09 Key Dungan - Food Science & Technology...

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