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Nitrogen Metabolism (MCBM Exam 3) Questions with 100% Correct Answers
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Nitrogen Metabolism (MCBM Exam 3) Questions with 100% Correct Answers
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1 of 41Term
Urea Cycle Step 1:
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-Citruline condenses with Aspartate to make Argininosuccinate via
argininosuccinate synthase
-occurs in cytosol
, -Arginine is converted into Urea via enzyme argininase
-this step regenerates Ornithine
-occurs in cytosol
-Argininosuccinate ---> Arginine via argininosuccinate lyase
-occurs in cytosol
Co2 + NH4+ (ammonia) converted into Carbamoyl phosphate via
CARBAMOYL PHOSPHATE SYNTHETASE 1
-this occurs in mitochondrial matrix
-this is the committed step of the urea cycle
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2 of 41
Term
Pyruvate can be interconverted into
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Alanine Glycine
Aspartate Glutamate
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3 of 41
, Term
the stomach secreting all these things is initiated by ____
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ACh (acetylcholine) Pepsinogen
Bicarbonate Hcl
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___ % of nitrogen excretion is through urea
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30% 86%
45% 60%
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5 of 41
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