Flashcards
Review the cards you are about to forget
Ready-made decks for every topic, scheduled so hard cards come back sooner and easy ones later.
Open flashcardsSpaced review
Cards you find hard come back sooner. Cards you know well come back later.
Term
Opportunity cost
The next best alternative given up when making a choice.
Decks for each topic
Start with decks that match your syllabus, or add cards of your own.
Why enzymes denature
High temperatures break the bonds holding an enzyme in shape. Its active site changes shape, so the substrate no longer fits.
Common mistake: enzymes are not killed, because they were never alive.
A few minutes a day
Daily review takes minutes and keeps the whole course fresh until the exam.
Your progress
Time studied this week: 6 h 40 min
Accuracy by topic
- Cell biology82%
- Genetics64%
- Ecology48%
Topics covered
11 of 18 topics revised
Example only.
Ready to use
Decks are written for each topic, so you can start reviewing today.
Make your own
Add cards for anything your teacher stresses or you keep forgetting.
Works on your phone
Review on the bus or between lessons.
- has a ready-made deck
- Every topic
- review schedule
- Spaced
- cards alongside ours
- Your own
Start studying in a couple of minutes
A free account saves your progress, remembers what you have covered and picks up where you left off on any device.
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One connected toolkit for learning, practice and coursework.
Frequently asked questions
Is this included in the free plan?
The free plan includes a sample. Paid plans include full access.
Still have a question?
The help centre covers plans, billing, marking and troubleshooting, and you can message us from there.
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