💊 PCAT Exam Prep

Cytochrome P450 enzymes are primarily located in:

A Kidneys
B Liver (endoplasmic reticulum of hepatocytes)
C Lungs
D Brain

✓ Correct Answer: Option B

CYP450 family: major drug-metabolizing enzymes in liver microsomes. CYP3A4 metabolizes ~50% of all drugs.

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