Chem 1005 Final Exam Actual Questions
And Detailed Answers | Latest Update
2026/2027 | Graded A+.
a reaction of ammonia with a-ketoglutarate is catalyzed by ___
and requires ___ as a reactant - ANSWER-glutamate
dehydrogenase; NADH or NADPH
select the choice that correctly indicates the proper sequence
of the three stages of urea biosynthesis leading to the urea
cycle - ANSWER-transamination -> oxidative deamination of
glutamate -> ammonia transport
nitrogen from amino acid metabolism is incorporated into all
of the following compounds except - ANSWER-cholesterol
in the case of a deficiency in phenylalanine hydroxylase which
of the following amino acids will become essential? - ANSWER-
tyrosine
which of the following cofactors or vitamins is required for the
conversion of homocysteine to cysteine? - ANSWER-pyridoxal
phosphate
supplementation of which of the following cofacors/coenzymes
may assist in the activity of the branched-chain ketoacid
dehydrogenase? - ANSWER-thiamine
, a 15 year old female is diagnosed with a melatonin deficiency.
Based on this information, metabolism of which of the
following amino acids is likely impaired? - ANSWER-tryptophan
a 55 year old man is diagnosed with hyperhomocysteinemia
due to a deficiency in cystathionine-B synthase. In this
individual which of the following amino acids could potentially
become essential? - ANSWER-cysteine
hyperpigmentation disorder is primarily due to deficient
metabolism of which of the following amino acids? - ANSWER-
tyrosine
serotonin is synthesized from which of the following amino
acids? - ANSWER-tryptophan
which of the following is the regulatory enzyme in pyrimidine
synthesis? - ANSWER-carbamoyl phosphate synthetase II
methotrexate is a potent anticancer agent that starves
dividing cells of deoxyribonucleotides through direct
inhibition of which of the following processes? - ANSWER-
metabolism of folic acid
inhibition of folate cycle by 5-fluorouracil will decrease the
synthesis of which of the following metabolites? - ANSWER-
dTMP
And Detailed Answers | Latest Update
2026/2027 | Graded A+.
a reaction of ammonia with a-ketoglutarate is catalyzed by ___
and requires ___ as a reactant - ANSWER-glutamate
dehydrogenase; NADH or NADPH
select the choice that correctly indicates the proper sequence
of the three stages of urea biosynthesis leading to the urea
cycle - ANSWER-transamination -> oxidative deamination of
glutamate -> ammonia transport
nitrogen from amino acid metabolism is incorporated into all
of the following compounds except - ANSWER-cholesterol
in the case of a deficiency in phenylalanine hydroxylase which
of the following amino acids will become essential? - ANSWER-
tyrosine
which of the following cofactors or vitamins is required for the
conversion of homocysteine to cysteine? - ANSWER-pyridoxal
phosphate
supplementation of which of the following cofacors/coenzymes
may assist in the activity of the branched-chain ketoacid
dehydrogenase? - ANSWER-thiamine
, a 15 year old female is diagnosed with a melatonin deficiency.
Based on this information, metabolism of which of the
following amino acids is likely impaired? - ANSWER-tryptophan
a 55 year old man is diagnosed with hyperhomocysteinemia
due to a deficiency in cystathionine-B synthase. In this
individual which of the following amino acids could potentially
become essential? - ANSWER-cysteine
hyperpigmentation disorder is primarily due to deficient
metabolism of which of the following amino acids? - ANSWER-
tyrosine
serotonin is synthesized from which of the following amino
acids? - ANSWER-tryptophan
which of the following is the regulatory enzyme in pyrimidine
synthesis? - ANSWER-carbamoyl phosphate synthetase II
methotrexate is a potent anticancer agent that starves
dividing cells of deoxyribonucleotides through direct
inhibition of which of the following processes? - ANSWER-
metabolism of folic acid
inhibition of folate cycle by 5-fluorouracil will decrease the
synthesis of which of the following metabolites? - ANSWER-
dTMP
