Free lesson · Premed & MCAT
Free MCAT biochemistry lesson: enzyme speed vs. favorability
One of the most-tested ideas in MCAT biochemistry: an enzyme changes how fast a reaction reaches equilibrium, not where equilibrium lies. Watch the lesson (it pauses to check your understanding), review the flashcards, then try MCAT-style practice questions across all six premed sciences.
- 1. WatchThe video pauses to quiz you.
- 2. Flashcards20 spaced-repetition cards.
- 3. Practice10 MCAT-style questions.
Enzymes: speed vs. favorability
One of the most-tested ideas in MCAT biochemistry: an enzyme changes how fast a reaction reaches equilibrium, not where equilibrium lies. Watch the lesson (it pauses to check your understanding), review the flashcards, then try MCAT-style practice questions across all six premed sciences.
Separate enzyme speed from reaction favorability
Catalysis, activation energy, and free energy, plus how to design a controlled comparison of reaction rates.
Preview lesson with automated narration. A version recorded by Dr. Dave will replace it.
Lesson flashcards
20 cards
Practice questions
10 questions
Researchers measured the initial rate (V₀) of an enzyme-catalyzed reaction at several substrate concentrations, with and without Compound X.
[S] (mM): 0.5 | 2 | 8 | 200 V₀ without X (µM/min): 20 | 50 | 80 | 99 V₀ with X (µM/min): 7.7 | 25 | 57 | 97
Question 1 of 10
Based on the data, Compound X most likely acts as which type of inhibitor?
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