BIBC 102 SS2 Practice Final Key

BIBC 102 SS2 Practice Final Key - BIBC 102 Practice Final...

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BIBC 102 Practice Final Exam Key 1). The following are basic questions regarding glycolysis: a. Name all the intermediates of the glycolytic pathway: i. Glucose, glucose-6-P, fructose 6-P, fructose-1,6-bis-P, DHAP/GAP, 1,3-bpg, 3pg, 2pg, PEP, Pyruvate ii. (Goodness, Gracious, Father, Franklin, Did/Go, By, Picking, Pumpkins, (to) PrEPare, Pie) b. Name all the enzymes involved in the glycolytic pathway: iii. Hexokinase, phosphohexoisomerase, phosphofructokinase, aldolase, triosphosphate isomerase, GAPDH, PGK, phosphoglucomutase, enolase, pyruvate kinase. c. Which steps are high energy commitment steps (irreversible)? iv. Glucose to glucose-6-P, fructose 6-P to fructose-1,6-bP, and PEP to pyruvate 2.) You just ran a 4 minute mile like Dr. Coleman. Which metabolic catabolic process proceeds during your run? Glycolysis During your run your body needs to regenerate NAD + from NADH in order keep glycolysis going. What anaerobic pathway is used to accomplish this? Lactic acid fermentation The product of this pathway is a three carbon molecule called lactic acid . This molecule is converted back into pyruvate by the enzyme lactate dehydrogenase in the liver . 3). Diagram the PDH (we’re looking for something along the lines of the diagram in homework 3).
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BIBC 102 Practice Final Exam Key 4). PDC Regulation The first subunit of the PDC is regulated by a kinase and a phosphatase. How is the kinase regulated, what is it turne don by? How is the phosphatase regulated, what is it turned on by? The kinase is allosterically regulated and the phosphatase is constitutively active. The kinase is turned on by increases in the ATP concentration over the [threshold]. The kinase phosphorylates subunit 1. Which amino acids could the kinase phopshorylate? What type of reaction does the kinase catalyze?
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BIBC 102 SS2 Practice Final Key - BIBC 102 Practice Final...

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