BIOC 431 Exam 3 F12

I name three of them 2 points one point for a correct

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Unformatted text preview: on than the active enzyme and now is able to bind an RNA hairpin found in specific RNA molecules. There are iron response elements in the RNAs encoding the transferrin receptor, which helps to bring iron into the cell, and ferritin, which is an intracellular carrier of iron. Binding to the iron response element in ferritin at the 5’ end inhibits protein translation. Binding to the iron response element in transferrin receptor at the 3’ end inhibits protein translation. Page | 5 [8] The following questions refer to the glyoxylate pathway in plants. (10 points) (a) How does the glyoxylate shunt differ from the TCA cycle? The glyoxylate shunt bypasses the loss of CO2 at the isocitrate dehydrogenase and α- ketoglutarate dehydrogenase steps of the TCA cycle. The two enzymes of the glyoxylate shunt are [1] isocitrate lyase that catalyzes the formation of glyoxylate (2C) and Succinate (4C) from isocitrate and [2] malate synthase that catalyzes the formation of malate from glyoxylate and acetyl- CoA. (b) The cycle enzymes are specific to a subcellul...
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This note was uploaded on 02/06/2014 for the course BIOC 431 taught by Professor Concettadirusso during the Fall '13 term at UNL.

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