RefineYour biology textbook, remembered
A biology chapter is fifty pages of processes that feed each other: glycolysis feeds the Krebs cycle, the Krebs cycle feeds the electron transport chain. Learn the steps one by one and the exam question about what happens when one of them stops still catches you.
The kind of question you get
When oxygen runs out, the electron transport chain ___ ATP production.
- stops driving (right)
- speeds up
- has no effect on
Why: oxygen is the chain's final electron acceptor. Without it the chain backs up, and the cell falls back on glycolysis and fermentation, which make far less ATP.
How it works
- Scan the pages you're assigned, or import your textbook's PDF. Using a free OpenStax textbook? Download its PDF and import it.
- Every chapter becomes something you can finish: a short read of what matters, and the full read when you need it. In a PDF, equations stay equations.
- A concept map of how the chapter's ideas affect each other.
- Questions about how it works, written from each chapter, with wrong answers that are wrong for a reason.
- A few minutes a day. Each question comes back just before you'd forget it, so the chapter is still there on exam day.
- Listen on the way to class, with each line lit as it's read.
What it is not
Refine helps you remember your textbook. It doesn't replace lectures or working the problems, and it won't do your homework.
Other subjects
Chemistry · Organic chemistry · Physics · Calculus · Anatomy & physiology · Nursing
Read the chapter once. Know it on exam day.
Refine launches on October 19 on iPhone, iPad and Mac.
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