Biology and Biochemistry quizzes

These practice quizzes cover the Biological and Biochemical Foundations of Living Systems section of the MCAT, the section the AAMC tests with 59 questions in 95 minutes. Each quiz takes one high-yield topic, such as enzyme kinetics, glycolysis and the Krebs cycle, transcription and translation, the endocrine system, or neurons and action potentials, and sets 25 questions, a mix of multiple choice and fill-in-the-blank, that ask you to predict, compare or interpret rather than recall a definition. Each one is set for about five minutes and runs in the browser with no account needed.

Every answer comes with an explanation, so a wrong answer shows you which step of the reasoning broke. If a quiz exposes gaps in the vocabulary itself, work through the flashcard deck on the same topic first, then come back and try the quiz again.