Solution:
Calcium is required to activate the enzymes involved in the formation of spindle fibers from microtubules. Calcium dependent ATPase is the source of energy for polymerizing tubulin dimers to lengthen the microtubules and spindle fibers.
The essential element that contributes for the formation of spindle apparatus is
Calcium is required to activate the enzymes involved in the formation of spindle fibers from microtubules. Calcium dependent ATPase is the source of energy for polymerizing tubulin dimers to lengthen the microtubules and spindle fibers.