18 Questions
Which conjugation pathway is important for the biosynthesis of endogenous amines like adrenaline?
Methyl conjugation
Which conjugation pathway is minor but important in the biosynthesis of epinephrine and melatonin?
Methyl conjugation
Which conjugation pathway is involved in the catabolism of noradrenaline, dopamine, serotonin, and histamine?
Methyl conjugation
Which pathway reduces the polarity of substrates through methylation?
Methyl conjugation
Which pathway involves the formation of quaternary ammonium salts?
O-sulfate conjugation
Which enzyme system is involved in the metabolism of xeno-biotics?
Cytochrome P450 enzymes
Where in the human body are cytochrome P450 enzymes mainly located?
Liver
Which type of enzymes are referred to as monooxygenases, mixed function oxidases or cytochrome P450?
Cytochrome P450 enzymes
Which enzyme system catalyzes reactions involving the introduction of one atom of oxygen into the substrate and one into water?
Cytochrome P450 enzymes
In which tissue is the highest amount of human cytochrome P450 found?
Liver
Which enzyme system is responsible for mutagenic or carcinogenic effects?
Cytochrome P450 enzymes
Which conjugation reaction plays an important role in hepatoxicity and carcinogenicity on N-hydroxylamines?
O-sulfate conjugation
Which of the following is the product of glycine conjugation of benzoic acid?
Hippuric acid
What is the function of acetylation in drug metabolism?
Deactivating potent xenobiotics
Which tripeptide is found virtually in all mammalian tissues and scavenges harmful electrophilic xenobiotics?
GSH
What metabolic process deactivates potent xenobiotics containing primary amino groups?
Acetylation
Which type of conjugation leads to amide bond formation with a variety of carboxylic acids, including aromatic and heterocyclic ones?
Amino acid conjugation
Which process provides atypical drug metabolism due to genetic polymorphisms?
Acetylation
Test your knowledge on Phase 2 drug metabolism conjugation reactions such as glucuronidation, sulfation, acetylation, methylation, and glutathione conjugation. Explore how genetic polymorphisms can affect drug metabolism.
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