Prostate gland
First of all, it's called "sperm" or "sperma." Second, no. It's the egg cell that gets fertilized by the sperm cell and activates a process which evolves the egg.
Water Activates it
GTP activates a G-protein when it displaces the GDP.
No. 1 product code activates 2 computers
your nerves
It activates the current cell for editing.
bacteria
dendritic cell
no shutdown
typsin
Look at rocks!