The blank is going to represent marijuana, LSD,PCP, and ecstasy. sited by google. hope that helped
Kinases. Kinases add phosphate to molecules, and the modification can serve as a "switch" to turn events in the cell on or off. CDKs or cyclin dependent kinases regulate the cell cycle.
I did not quite understand that but in pretty sure it is b
C. membrane bound organelles and no distinct nucleus
