AHL: Origin of life

This AHL sub-topic explores leading scientific hypotheses for how life first arose on Earth, from pre-biotic organic molecule synthesis to the emergence of the first cells and eukaryotic organelles. It connects cell biology to evolutionary theory for IB Biology HL.

📖Study Guide

In-depth bilingual notes with worked past paper examples.

✍️Practice Exam

Timed practice questions with mark scheme grading. Coming soon.

🎴Flashcards

Spaced repetition for key concepts and definitions. Coming soon.

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