Free practice · SBI4U · Grade 12

Free Grade 12 Biology practice test.

405+ real practice questions across 5 units of Biology (SBI4U), the Ontario Grade 12 curriculum. Timed sets, instant marking and worked solutions. Start on any device — no signup, no cost.

405+ questions · 5 units · Grade 12 · SBI4U
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What the grade 12 biology practice test covers

  • 01Biochemistry
  • 02Metabolic Processes
  • 03Molecular Genetics
  • 04Homeostasis
  • 05Population Dynamics

How it works

Pick a set

Full-course review or a single unit, in Practice (untimed, instant feedback) or Test (timed) mode.

Work through it

Clean, exam-style questions with math typeset properly. Some come with an interactive Manifold graph.

See where you stand

Every question is marked with a worked solution, and a per-unit breakdown shows exactly what to review.

Stuck on grade 12 biology?

The practice test shows you what to fix; a tutor helps you fix it fast. Jeremy and the team tutor Biology (SBI4U) one-on-one, online across the GTA or in person in Markham. Browse subjects or request a session.

Start the grade 12 biology practice test →