What two components constitute an active mpf? a growth factor and mitotic factor atp synthetase and a protease cyclin and tubulin cyclin and a cyclin-dependent kinase?

The answer is tubulin cyclin and a cyclin-dependent kinase

The two components that constitute an active maturation-promoting factor (MPF) is tubulin cyclin and a cyclin-dependent kinase. MPF stimulates the mitotic and meiotic phases of the cell cycle. It has the ability to phosphorylate target proteins at a specific point in the cell cycle and thereby control their ability to function.

tissue

explanation:

it is actually formed by geoup of cells which is tissue

c. heat from the poles back down towards the equator.