Winter 2009 MT2 answer key

Winter 2009 MT2 answer key - BIS103-002 (Winter 2009)...

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BIS103-002 (Winter 2009) February 23, 2009 A-group Midterm #2 Student Name _______________________ Instructor: Oliver Fiehn Student ID #_________________________ Page 1 of 13 Please, check appropriate box below. Undergraduate student Open enrollment Completing incomplete Graduate student This exam consists of 39 questions. A maximum of 100 points can be earned. Partial credit will be given. There are a total of 13 pages, including the cover page. If you need more space, use the back of pages. Petitions for regrading will be considered only if you have used permanent ink, unless an addition error has occurred. *IT IS YOUR RESPONSIBILITY TO WRITE LEGIBLE! No extra effort will be made to decipher your handwriting. I,_______________________________________, authorize the University to distribute publicly this graded exam (e.g., handed out in class or left in a bin for pick up). I am aware of the fact that violations of the Academic Code of Conduct 1 may be reported to UC Davis Student Judicial Affairs. 1 Examples of academic misconduct include: receiving or providing unauthorized assistance on examinations, using unauthorized materials during an examination, altering an exam and submitting it for re-grading, or using false excuses to obtain extensions of time ( http://sja.ucdavis.edu/cac.htm ). Signature________________________________________ Date_____February 23, 2009___ Create PDF files without this message by purchasing novaPDF printer ( http://www.novapdf.com )
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BIS103-002 (Winter 2009) February 23, 2009 A-group Midterm #2 Student Name _______________________ Instructor: Oliver Fiehn Student ID #_________________________ Page 2 of 13 Q01 and Q02 Consider following study: A liver extract capable of carrying out all the normal gluconeogenic reactions of the liver is briefly incubated in separate experiments with the following 14 C-labelled precursors (radioactive carbon marked *). All necessary further enzymes, cofactors and further intermediates are present. How many carbons will be marked radioactive in the final product glucose if the following substrates are used? Q01 [ 14 C] Bicarbonate 2 points a) 0 the same carbon dioxide is lost in the PEPCK reaction that was added in oaa formation b) 1 c) 2 d) 3 e) 6 Q02 [ 14 C] Pyruvate 2 points a) 0 b) 1 c) 2 because 2 pyruvate make glucose. The position would be at carbon 3 and 4 d) 3 e) 6 Q03 3 points What is the cost in ATP equivalents of simultaneously transforming glucose to pyruvate via glycolysis and back again to glucose via gluconeogenesis? (hint: you could write the net reaction of glycolysis and gluconeogenesis and take the difference). a) 0ATP equivalents b) 1ATP equivalents c) 2ATP equivalents d) 4ATP equivalents e) 6ATP equivalents (the question did not assume ETC/oxphos! So it’s +2ATP in glycolysis and -6ATP in gluconeogenesis) Create PDF files without this message by purchasing novaPDF printer ( http://www.novapdf.com )
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BIS103-002 (Winter 2009) February 23, 2009 A-group
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Winter 2009 MT2 answer key - BIS103-002 (Winter 2009)...

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