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Kaplan Qbank USMLE



Author14 Posts
  #1

Which of the following citric acid cycle intermediates is required for heme synthesis ?

a.-alpha-ketoglutarate
b.-fumarate
c.-isocitrate
d.-oxaloacetate
e.-succinyl-CoA

  #2

E.-Succinyl CoA

  #3

Oh well

  #4

First step in hem synthesis is succinylCoA + glycine ---d aminolevulinic acid in the presence of ALA dehydrase.

  #5

correct
thanks

  #6

blueocean wrote:
First step in hem synthesis is succinylCoA + glycine ---d aminolevulinic acid in the presence of ALA dehydrase.

Sorry This is not Dehydrase enzyme.

Which is the frist enzyme in the synthesis of Heme and what is its co-factor?


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FA is just a good revision book.It is not a "real" learning tool.

  #7

ALA synthase, vit B6

  #8

Good

B6 deficiency causes what type of anemia ??




___________________
FA is just a good revision book.It is not a "real" learning tool.

  #9

sideroblastic

  #10

yes, you have right guys. Is ALA synthase but my mind was somewhere "over the rainbow" I guess!

  #11

docsrinu wrote:
sideroblastic

CORRECT

AND NOW

What is the most common cause of Sidroblastic anemia in USA??


___________________
FA is just a good revision book.It is not a "real" learning tool.

  #12

whats the ans leopard??

  #13

lead poisonig

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keep going.. as the GOING gets TOUGH, the TOUGH gets GOING.. keep going..

  #14

blueocean wrote:
First step in hem synthesis is succinylCoA + glycine ---d aminolevulinic acid in the presence of ALA dehydrase.




Aminolevulenic acid synthase, mate!


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