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Retired NBME 24 Answers

nbme24/Block 3/Question#36 (reveal difficulty score)
A 1-month-old male newborn is brought to the ...
Tyrosine 🔍 / 📺 / 🌳 / 📖
tags: biochem repeat

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submitted by zelderonmorningstar(96)
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Cna msenoeo iplanex wyh the awersn ’nuctold be lea?hnnyealpni

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donutsnduodenums  ehT ikd ash im,libnas hiwhc si eud to eedcreads riyeaostns tivytcai. fI eh ash a obemrpl eibinoalgzmt eyi,hlnPlanean he doluw eb gipsnenert htiw eht KUP sx ekil eullatltneci tyds,iiilba smytu bydo o,odr e.t,c in dnaoiidt to his fiar pliomcnoex. +22
zelderonmorningstar  I see, os if ti was UPK he w’otudln juts be sipntegrne for a tioenru eam.otnixina It owuld be one of eohts o“h arpc wts’ha nworg ithw ym ”byab oens. +16
wowo  1029AF p83 +
nbme4unme  utJs a etno thta rWoUdl says ohnnpryulteakie asttepin SLAO vhae ibnmisl,a ist' just htta the oreun sx nad stmuy rerdo are s.viyeagwa +4
pathogen7  ihaen,Tlccyl sbmnaili si a polberm psoergsnic A,DPO nad otn nryoe,sit n?o I wsyala csdoisatea reny"tois rpnocsegis tcedef" wthi rshn,oioocs hciwh si wyh I ditn'd esocoh eri.nosyt ssGeu Im' o.rnwg +5
cmun777  egtopnah@7 r'eoyu ont wongr ti is alfclpeicyis DOPA btu wdulo ayn fo het rothe rnewsa shceioc amke any sesen eorv s?ryeiotn +5
qiss  e@hnt7gapo soal s-ey uoy ant'c akem PDOA bsceaue fo a iedtfeecv tsesyrnoia .zmneye Thsi eyemnz salo meotsealzbi nyoirest inot POAD boerfe ti itasbezemlo OPAD giLwpsig8qk&2qaMDEuz&mpapKps&hq=cpGAT0ymdrBt&28lmyaYp:oUbVa/iosaK/CiKmMVrcmsCRncnwxafzG=;2higtgpL3wo;wp7/2js=ehUaMmEWZcjsg3j_&zw;h.#p1BsH1AaF5xQsAm;Xoslr;wrber98bVe=QA18;gaoi9Q20c2o5eu=t6-KHwwmxh:-=7to=i?U0Xstma1&.i&ahvVmmt10VBNA7=Rr=e1eo;0a +

  • PKU commonly results from deficiencies in the enzyme phenylalanine hydroxylase, which converts phenylalanine to tyrosine.
  • Tyrosine, in turn, is required for synthesis of the catecholamines dopamine, norepinephrine, and epinephrine.
  • Supplementation with tyrosine effectively bypasses the defective enzyme and allows for the normal synthesis of catecholamines

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