IB SL Biology Past Paper 2 Questions - Question 1 [Elements and water]

Today we go through a simple Paper 2 Section B Question from the IB Standard Level (SL) Biology exam about elements found in living organisms. Really straightforward question, I've detailed the roles of these elements in addition to just listing them.

To download previous sets of questions, like us on our Facebook page above and click the "Download Now" button.

Thanks for watching!