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Turn your Keystone biology notes into flashcards

Upload the class notes, review packet or textbook chapter you already have. DeckOwl builds flashcards from that material and schedules reviews so you revisit what you are about to forget.

Create flashcards nowFree · No credit card required

Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free account · 3 sets a month · Creates flashcards in seconds

Studying for Keystone Biology from your own material

Most students preparing for the biology keystone exam already have the material they need: class notes, a review packet, and a textbook chapter on cells or genetics. The problem is turning that material into something you can drill quickly and often.

Cards come from your own class notes, not a generic set.
Spaced repetition schedules reviews around the cards you miss.
Photos of printed review sheets are read with text recognition.
Start on the free plan without a credit card and upgrade only if you need exports.

Example Keystone Biology flashcards

What is the function of the cell membrane?It controls what enters and leaves the cell through selective permeability, which maintains homeostasis.

Where do the light-dependent reactions of photosynthesis take place?In the thylakoid membranes of the chloroplast, where they produce ATP and NADPH and release oxygen.

How do mitosis and meiosis differ?Mitosis produces two genetically identical diploid cells, while meiosis produces four genetically varied haploid gametes.

What phenotype ratio do you expect from a monohybrid cross of Aa by Aa?A 3:1 ratio of dominant to recessive phenotypes, with a genotype ratio of 1:2:1.

What is natural selection?Individuals with heritable traits that improve survival and reproduction leave more offspring, which shifts allele frequencies over generations.

Generate the full set

Built from your material

Upload PDF, DOCX, PPTX, plain text or photos of pages, and get cards that match your own course content.

Spaced repetition

Cards you miss come back sooner, and cards you know move further out, so review time goes to the hard material.

Study anywhere

Study in the browser on the free plan, and export to Anki or CSV when you upgrade to Plus.

How it works

Upload your notes

Add a PDF, slide deck, Word file, text notes or a photo of a review sheet.

Generate flashcards

DeckOwl turns the material into question and answer cards you can edit before studying.

Review on a schedule

Work through the daily cards, rate how each one went, and let spaced repetition set the next review.

Flashcards work well for the terms, processes and comparisons that show up on the exam, such as mitosis versus meiosis or the steps of natural selection. Upload your files as PDF, DOCX, PPTX or plain text, or photograph a printed page and let text recognition read it. Spaced repetition then brings each card back at the right interval.

The free plan gives you 3 generations per month and browser study with no exports, which is enough to test the workflow. Plus, at $99.90/year or $9.99/month, removes the generation limit and adds PDF, DOCX, Anki and CSV export. Students with a school email get 40% off.

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Frequently asked questions

What topics does the Keystone biology exam usually cover?

The Pennsylvania Keystone biology exam is built around state standards in areas such as cells, genetics, ecology and evolution. Check the current assessment anchors from the state for the exact list before you build your card set.

How should I study biology flashcards for Keystone review?

Review a short set of cards every day instead of cramming, and mark the ones you miss so they return sooner. Spreading practice over several weeks usually works better than one long session the night before.

Can I export my biology flashcards to Anki or a PDF?

Yes, but exports are part of the Plus plan at $99.90/year or $9.99/month, which adds PDF, DOCX, Anki and CSV export. The free plan lets you study flashcards in the browser with 3 generations per month.

Do I need a credit card to try DeckOwl?

No, you can start on the free plan without entering a credit card. Students with a school email get 40% off Plus.

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