Biochemistry
Free biochemistry guides
Worked examples and practice problems with answers. Each guide ends with a few questions you can check yourself.
Guides
- Michaelis-Menten practice problems: Michaelis-Menten kinetics explained with Km, Vmax, kcat and the Lineweaver-Burk plot, plus worked practice problems with answers.
- Competitive vs noncompetitive inhibition: How competitive, uncompetitive, noncompetitive and mixed inhibitors change Km and Vmax, how they look on a Lineweaver-Burk plot, and practice questions.
- Henderson-Hasselbalch practice problems: Buffer pH, ratios, and percent protonated, with worked examples, eight questions, and a calculator.
- Glycolysis quiz: The 10 steps and enzymes in order, ATP and NADH yield, and PFK-1 regulation, with an ordering exercise and eight questions.
- Amino acid quiz: All 20 amino acids with one-letter codes, side-chain classes, memory tips, and a flashcard game.
- Isoelectric point (pI) practice: Find the pI of any amino acid, its net charge at a given pH, and its direction in electrophoresis, with a charge calculator.