6.2.5: Post-lab Questions
- A buffer is a chemical often added to growth media to prevent shifts in the pH of the media. A buffering system will absorb or release \(\ce {H+}\) ions to prevent the media from becoming too acidic or alkaline, respectively. Why would it be important to add a buffer to growth media?
- Based on your results, is there overlap in the pH ranges of the organisms? Why might this be?
- The pH of seawater is around 8.3. What factors or media adjustments would you have to make when trying to culture marine organisms?