How do I try a free OCR Biology question?

Just tap any of the four options on this page — no signup, no card, nothing to install. You'll see the correct answer and a full mark-scheme-style explanation within a second. Each visit shows a fresh randomly-picked question from the live OCR GCSE Biology bank, so you can keep refreshing to try different ones before deciding whether to create a free account for daily access.

Is Kramizo really free for OCR Biology students?

Yes — completely free. Every student gets 45 questions a day on the free plan, across any board and any subject, with no card required and no trial countdown. Kramizo's optional Pro plan removes the daily cap and adds analytics, but the free plan is genuinely free forever. We make money from the small percentage of students who choose to upgrade — not from selling data or ads.

Are the Biology questions aligned to the OCR GCSE syllabus?

Every question is written against the published OCR GCSE Biology syllabus and reviewed for accuracy before being added to the bank. We match the command words (state, describe, explain, evaluate), mark allocations, and difficulty tier you'll see on real OCR past papers. Explanations are written in the style of official examiner mark schemes so students learn exactly what marks are being awarded for.

Kramizo

OCR · GCSE · Biology

One real Biology question.
No signup. 30 seconds.

Topic: B1: Cell Level Systems. Pick an answer — get the mark scheme instantly.

Question · Difficulty 2/3

The 'lock and key' model describes how an enzyme's active site fits its:

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Pick your board & subject

Try a real question from the bank — no signup needed.

90 questions

Exam boardSubject

One real Biology question.No signup. 30 seconds.

One real Biology question.
No signup. 30 seconds.