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Kaplan Qbank USMLE



Author3 Posts
  #1

A 6-month-old boy is brought to the pediatrician by his parents, who are
first cousins. This is their first child. Physical examination reveals a
small, thin, lethargic infant with slightly misshapen long bones. His
features are somewhat coarse. Joint movements are restricted, his corneas
are clouded, and his gums are underdeveloped. His liver is not enlarged.
Serum levels of acid hydrolases are found to be elevated. The child most
likely has a defect in which of the following metabolic activities?
A. Degradation of dermatan sulfate and heparan sulfate
B. Degradation of gangliosides
C. Degradation of glycogen
D. Degradation of sphingomyelin
E. Phosphorylation of mannose moieties
F. Phosphorylation of tyrosine moieties

___________________
to love when it can be lost, to go on when progress seem futile and to believe in every fiber of your body. to live , have hope and faith and to never give in.... dr_singh246@yahoo.com

  #2

I cell disease


E. Phosphorylation of mannose moieties

  #3

A. Degradation of dermatan sulfate and heparan sulfate







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