This page contains all of our IB biology 2025 topic 3 & 13 videos, covering the entire
topic 3 & 13 syllabus of the
IB biology 2025 course.
By watching these videos, you will have fully covered the IB biology 2025 topic 3 & 13 sub-topics, including: diversity of organisms, gas exchanges, transport, body systems, defence against infectious disease, reproduction, monogenic inheritance, homeostasis, further diversity, classification & cladistics, further gas exchange, further transport, muscle & motility, plant systems, further reproduction, polygenic inheritance, and further homeostasis.
Once you're done with these biology 2025 topic 3 & 13 videos, checkout our
topic 3 & 13 notes.