{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Exam3-2006 - BIO 361 EXAM 3 FALL 2006 NAME ID 1 Write Your...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
BIO 361 EXAM 3 FALL 2006 NAME:_________________________________________________ ID:_____________________________________________________ 1. Write Your name and ID on all pages 2. Write all answers in pen only 3. Make sure your exam has seven pages including this cover page Page 2 _______________ Page 3 _______________ Page 4 _______________ Page 5 _______________ Page 6 _______________ Page 7 _______________ Total _______________ Maximum of 100 points
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
_______________________________________________ ______________________ Name SOLAR ID# 2 1. Fructose requires several unique enzymes to be metabolized in liver. a. Why does liver need these enzymes, but other tissues do not? (2 points) b. Draw the pathway that brings fructose into the glycolytic pathway in the liver cells. Make sure you include all enzymes, intermediates, and cofactors. You do NOT need to use structural formulae. (8 points) 2. Choose the answer from the list below that best matches the following statements concerning pentose metabolism. Only one answer per line. (10 points) _____ Hydrolyzes an intramolecular ester. _____ Deficiency of this enzyme causes hemolytic anemia. _____ Stabilizes carbanion intermediates using a protonated Schiff base. _____ Transfers 2-carbon fragments from ketoses to aldoses. _____ Converts ribulose-5-phosphate to ribose-5-phosphate a. Transketolase b. Transaldolase c. 6-phosphogluconolactonase d. 6-phosphogluconate dehydrogenase e. Glucose-6-phosphate dehydrogenase f. Ribulose-5-phosphate epimerase g. Ribulose-5-phosphate isomerase
Background image of page 2
_______________________________________________ ______________________ Name SOLAR ID# 3 3. Six ATP equivalents are required to convert two molecules of pyruvate to one molecule of glucose. Provide the name of the enzymes catalyzing the reactions requiring ATP (or GTP) in conversion of pyruvate to glucose, and write a balanced equation (substrates, products, cofactors) for the reactions they catalyze. Structures are NOT required. (10 points) 4. Many metabolic pathways are regulated allosterically by the energy state of the cell. Under conditions of a low energy state ( e.g. low ATP, Acetyl-CoA, NADH), indicate whether the following pathways would be inhibited, activated, or unaffected. For each pathway that is affected, name one enzyme that is regulated by the energy state. For pathways that are unaffected, write “none” under enzyme. (10 points) Pathway Effect
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}