MAPK has two different functions depending on where this kinase acts in the (two words). If the kinase becomes active during interphase the cell is triggered to progress through the (two words).

The most matchable words for the given fill in the blanks will be - Cell cycle and cell cycle .

Explanation:

MAPK has two different functions depending on where this kinase acts in the cell cycle. After the kinase becomes active during interphase the cell is triggered to progress through the cell cycle.  Mitogen-activated protein kinase (MAPK) mainly deals with the regulation of the cell's functions. It also helps in proliferation, gene expression, mitosis, cell survival, and plays a key role in apoptosis. They are mostly found in eukaryotes.

The correct answer is b