Which of these statements does not explain the slower onset of symptoms of vitamin B12 deficiency than folate deficiency; a. the pathway that require vitamin B12 are not quiet essential b. the liver stores a lot of vitamin B12 unlike folate c. the enterohepatic circulation conserves vitamin B12 d. intrinsic factor is secreted in large amounts A 35-year-old man has recessive genetic disease that predisposes him to recurrent deep vein thrombosis is diagnosed with right lens dislocation by the ophtalmologist. The patient has no red blood cell abnormalities and no evidence of hemolysis. The most likely defective protein in this patient is; a. lysyl oxidase b. cystathionine beta-synthase c. fibrillin d. homocysteine methyltransferase Which of these conditions does not have a similar presentation as biotinidase deficiency in children? a. zinc deficiency b. leucine deficiency c. methionine synthase defciency d. essentail fatty acid deficiency.

1. Which of these statements does not explain the slower onset of symptoms of vitamin B12
deficiency than folate deficiency;
a. the pathway that require vitamin B12 are not quiet essential
b. the liver stores a lot of vitamin B12 unlike folate
c. the enterohepatic circulation conserves vitamin B12
d. intrinsic factor is secreted in large amounts
A 35-year-old man has recessive genetic disease that predisposes him to recurrent deep vein
thrombosis is diagnosed with right lens dislocation by the ophtalmologist. The patient has no red
blood cell abnormalities and no evidence of hemolysis. The most likely defective protein in this
patient is;
a. lysyl oxidase
b. cystathionine beta-synthase
c. fibrillin
d. homocysteine methyltransferase
Which of these conditions does not have a similar presentation as biotinidase deficiency in
children?
a. zinc deficiency
b. leucine deficiency
c. methionine synthase defciency
d. essentail fatty acid deficiency