After seeing some less-than-evidenced based answers on Quora, I felt obligated to set things straight.
No need to speculate or answer in general terms. The AAMC lays out all of this information.
- On the Biological & Biochemical Foundation section (BB) 25% of the content is pulled from first-semester biochemistry.
- On the Chemical & Physical Foundations section (CP) 25% of the content is pulled from first-semester biochemistry.
59 questions * .25 = 14.75 ~15 questions in the CP section and another ~15 questions in the BB section for a grand total of 30 biochemistry questions on the MCAT.
Having taken the MCAT twice (515 in 2016 518 in 2019), I would say that 2/3 will be Amino Acid questions.
10 questions will be about metabolism. If scoring remarkably well on the Biochem questions of the MCAT interests you, specifically the metabolism questions, I’d recommend the resources that I have made over at
Best in health and studying,