I need help with my bio work
If any one knows the answer e-mail me at

1. After boiling a coleus leaf in water a substance cuased a color change.
Why and what was the name of the substance?

2. Which is more reliable when analyzing the results of the chromatoghraphy
lab, the colro of the spot or the Rf value?

3. from a plants piont of view what would happen if chlorophyll was polar?