What is happening to the [OH-] when the solution turns from pink to violet?

the hydroxide ions are undergoing ionization and the particles are gaining / losing electrons .

Explanation:

i think it is because ::

the phenolphthalein of the solution has gone from having a pH of around 8 (pink) to being alkaline at above 10 which causes it to burn purple / violet .

organisms that are both used in toothpaste as well as cause malaria are protista and monera.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.