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Biochemistry Exam 3- Textbook questions
Terms in this set (30)
Vitamins typically act as ______ in the reactions they participate in.
Which animal cannot synthesise vitamin C from glucose?
Vitamin C is known to participate in which reaction type?
Vitamin C is known to participate in all of the following except:
Absorption of which of the following from the digestive tract is thought to be enhanced by vitamin c?
Which of the following is a normal degradation product of vitamin C
Vitamin C is known to known to be concentrated in all of the following locations except
Glutathione participates in:
Which of the following glycolytic reactions involves thiamin:
Pyruvate to acetyl coA
A thiamin deficiency can be judged by measuring the activity of which one of the following enzymes in mature erythrocytes:
Which is a FAD- containing enzyme:
Conversion of riboflavin to its coenzyme derivatives occurs to the greatest extent in which organ?
Riboflavin 5'-monophosphate (FMN)
Is formed by:
ATP dependent phosphorylation of riboflavin
Which of the following amino acids is used in the biosynthesis of nicotinate mononucleotide (NMN):
A deficiency of which of the following B-complex vitamins would make it more difficult to convert Typ to NMN and therefore potentiate a niacin deficiency:
Niacin deficiency is best associated with:
Which of the following enzymes are best associated with niacin (vitamin B3):
A prosthetic group for acyl carrier protein
Coenzyme A.SH is associated with all of the following except:
Ketone body synthesis
Mito B-oxidation of FAs
Cytoplasmic glycogen synthesis
Cyto glycogen synthesis
Acyl-CoA compounds are properly referred to as:
A B-complex vitamin
Which TCA cycle enzymes are associated with pantothenate?
Succinate thiokinase and citrate synthase
Is filtered by the kidneys and excreted in the urine
The oxidative decarboxylation of pyruvate at acetyl CoA requires:
Thiamine, lipoic acid, niacin, pantothenic acid, and pyruvate dehydrogenase
Which one of the following compounds, contained in egg white, binds strongly with biotin in the digestive tract, thus preventing its absorption:
Biotin is a coenzyme for certain:
Which one of the following mitochondrial reactions involves biotin?
Propionyl-CoA —> Methylmalonyl-CoA
Biotin is involved in ketone body production from which one of the following amino acids?
Approximately 70-80% of vitamin B6 in mammalian organisms is associated with which enzyme?
Adipolytic triglyceride lipase
Pyridoxine deficiencies are best associated with increased urinary excretion of:
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