Phase 2 Drug Metabolism Conjugation Quiz

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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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