LIFE SCIENCE

Detailed explanation-1: -Cytoskeleton. The cytoskeleton is a network of long fibers that make up the cell’s structural framework. The cytoskeleton has several critical functions, including determining cell shape, participating in cell division, and allowing cells to move.

Detailed explanation-2: -Endoplasmic reticulum (ER) exists as a membranous network enclosing a fluid-filled lumen which almost fills up the intracellular cavity. The cytoskeleton is involved in providing cell shape and maintaining internal organization of the cell.

Detailed explanation-3: -In addition to playing this structural role, the cytoskeleton is responsible for cell movements. These include not only the movements of entire cells, but also the internal transport of organelles and other structures (such as mitotic chromosomes) through the cytoplasm.

Detailed explanation-4: -Microtubules act as a scaffold to determine cell shape, and provide a set of “tracks” for cell organelles and vesicles to move on. Microtubules also form the spindle fibers for separating chromosomes during mitosis.