MSCI 530 Quiz 7 Amino acids
MSCI 530 Quiz 7: Amino acids and Vitamins Metabolism
- The type of atrophic gastritis that is characterized by megaloblastic anemia, histamine-fast achlorhydria and antibodies against the intrinsic factor is;
- This cause of Vitamin B12 deficiency leads to an early onset of symptoms in affected patients;
- During a neonatal genetic screening, Betty’s baby is found to have phenylketonuria. The defective enzyme in this disease is most likely?
- A patient with Vitamin B 12 deficiency due to decreased intrinsic factor production will get the least benet from this form of treatment;
- Which of these is least likely to result in hyperhomocysteinemia?
- Which of these amino acids is considered conditionally essential because its levels are dependent on dietary intake of methionine?
- Which of these amino acids is considered as strictly ketogenic and cannot be used in gluconeogenesis?
- Tyrosine is a precursor for these hormones except;
- Which of these is a branched-chain amino acid?
- Tryptophan is a precursor for the synthesis of;
- Maple syrup urine disease results from the deficiency of this enzymes that is involved in the metabolism of Isoleucine;
- This activity of this enzyme will not likely be affected by a deficiency of dihydrobiopterin reductase;
- Which of these hormones is not inactivated by monoamine oxidase?
- In patients with with pyridoxine-responsive epilepsy, PLP is deficient due to its sequestration by;
- In phenylketonuria, phenylalanine hydroxylase deficiency leads to the increased urinary excretion of this metabolite;
- Aminopterin is used as an anti-cancer drug to reduce the rate of cell proliferation by inhibiting this enzyme;
- Which of these conditions is least likely to impair the activity of methionine synthase?
- A deficiency of these vitamins can result in hyperhomocysteinemia except;
- Which of these does not serve as a one-carbon donor to FH4?
- The deficiency of Vitamin B12 often results in a folate trap in the the form of N5-methyl-FH4 (a functional folate deficiency) due to;