10k - Net ID KEY A BioBM3310 MAKE-UP QUIZ 10a 12/02/09 1....

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Net ID KEY A BioBM3310 MAKE-UP QUIZ 10 a 12/02/09 1. (4 pts) In plants, there are 4 main protein-pigment complexes, PSII, PSI, Cytbf, and light-harvesting complex ( LH ), together with the ferredoxin-NADP+ oxidoreductase ( FNR ). Of these, choose the ones described: a. oxidizes ferredoxin ___ FNR ___ b. reduces plastocyanin ___ Cyt bf ____ c. absorbs most of the light that strikes the thylakoid _ LH ____ d. oxidizes H 2 O __ PSII ____ 2. (7 pts) Answer the following questions about the Calvin Cycle . Abbreviations O.K. a. Name the reducing agent used for hexose synthesis _ NADPH _ b. Write R or Ox or N next to the following to indicate whether the following function as reducing agents, oxidizing agents, or neither: antenna pigments _ N _ H2O _ R _ P700+ _ Ox _ P680* R _ QH2 _ R _ 3. (5 pts) Answer the following questions about fatty acid synthesis. Abbreviations O.K. a. Name the molecule which inhibits carnitine acyltransferase I _ MALONYL-CoA b. Acetyl-CoA carboxylase is both locally and hormonally controlled. Name one hormone that inhibits this enzyme _ GLUCAGON; EPINEPHRINE _ and one hormone that activates _ INSULIN _ Name one small molecule that activates this enzyme __ CITRATE __ and one small molecule that inhibits PALMITOYL-CoA _ 4. (5 pts) Answer the following questions about delivery of lipids to the tissues, and cholesterol biosynthesis. Abbreviations OK. a. Name the two types of lipoproteins that are synthesized in the liver: __ HDL __ and _ VLDL __ b. Name the lipoprotein, which is a remnant of one synthesized in the liver, that has the normal function to deliver cholesterol esters to the tissues: _____ LDL ____ c. Which lipoprotein is formed immediately after a meal, travels in the lymph, then in the blood vessels? CHYLOMICRONS
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This note was uploaded on 09/19/2010 for the course BIOBM 3310 taught by Professor Feigenson,gw during the Fall '07 term at Cornell University (Engineering School).

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10k - Net ID KEY A BioBM3310 MAKE-UP QUIZ 10a 12/02/09 1....

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