Exam3--Winter2002 - F-,. *.-r*i:LP. i.rdJl of the above Bio...

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Unformatted text preview: F-,. *.-r*i:LP. i.rdJl of the above Bio 310- rntroductory Biochemistry }lyl, Answer ALL 20 guesfions (5 points eacb) Ilxam r - April l( I - Which of the fouowing is/arJtrue "o.rr.*ing gruconeogenesis? f#:;ffi;iJ:Ttr1"*::*.,ff 1._ffi dinii; j,i"omitochondriarmembrane 1,"1ff: ffij** "oqv*i' must be ibvp*,6;il;ffi ##illffiTlf;iofrucrokinase_ r, and Ertte' bypass reactions in the gruconeogenirc pathway have aG,Os near zero, while other gruconeogenic reactions rr"".^r*q"ffii* ac,or. / 6 ffi1"8"n of fatrv acids provid.r "nogv f"r ;r";;;;;enesis during srarvation (,i 2' under conditions-orepin)ilrlne relea,se,.which one.of the fo.ilowing muscre enzymes wourd have a f#iffif;,l*;'#i"*d to th' condition in ,"ni"n epinephrin.-f,* ""t been rereased? L}+AMP-dependent protein kinase * ^ rr )dPnotpn"dt.Jofu"*"-z A o,. B .d[ Pynrvate kinase-E-Pho sphopro tein pho sphatase 3. A welr-trained marathon nrnner reaches the 2oth mile of the race. which of the following enzvmes "irr 1"h;;;;;;; flD inactive at this srage of the run? *.-ljltt,*lt:ogrnplq.sphoryl^e-j-,,,.. _ r . 1i;.1! ., ... ./, AjLY,:,_fl{1cennlosphorytase - oa'''r-t;q ly'r-:ver glycogen s5mthase u. Honnone-sensitive triacylglycerol lipase . E. Muscle pynrvate dehydrog-enas \--=_ 4' Marasm,s is the medical term for the condition that results from starvation. In rud countries like the u's'' it is relativelv ulcommo* However,-there i, u "o*oo psychorogicur iuorrrgguaNervosa" that results m the same ty*pto*t and problerns seen for r"*;;;;"tr, ",iraiiirrir;;"d rugh grucagon ro insurin ratios. ifi*ii:.flucagon: insutin r"tio s"tn io t"rr*oJ"JJin "oor.ri.-o*-Josa wouro do which of *re \fncrease glucose upjuk" by the liver +--== ^t ^ ^ . J t ffroyte mobiiization of fatty.riar to* adioose risqrr. c{aQ U^t^ i\- : __:_:_ vJ urv lysl _____-_-__ ?i::T:::11:b,iiTri"1o.f ary acids from adipose tissue ? *11,p_'":reased Tryry "iery."e;;yrrt*ni:-.n.Lsatt ro utcreased activity ofglycogen synthase \ *:t*l decreased glu.orroi;o.r';t th" Iiver s v,qu .a ar,. ,, , \, s.^. f,xarn3-Aprilt6, t/t,u1/O-{-& \ ) s , ^ . ; \ . " , , . a , . . 1 ' ' Fatty acids are activated to acyl-coAs and, the acyl group is further transfemed to carnitine becauser : acYl-coAs easily cross the mitochondriut *r*ui#,iy, * htty acids themselves w'r not" : farrv acids cannot be oxidized btWit:il;r:,ffi in the acyr_cq,nitine form. : canritine is required to oxidize NAD+ to NADH.' -- 'r urs a',yl-cafmme ) ffijffi#X* s;i;-'."*;i" *itorno;drd irr"r membrane, bur acyr_cotu do not. ' ( ' The rore of hormoae-sensitive triacyrglyceror lipase is to: , lv{roffze linids stored in the liver ) hydrolyze triacylglycerols stored in adipose tissue. hydrolSze membrane phgsphoripid, in hor*one-producing cets....
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Exam3--Winter2002 - F-,. *.-r*i:LP. i.rdJl of the above Bio...

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