What is the purpose of the cytoskeleton in regards to the cell membrane?

The Cytoskeleton of a cell is made up of microtubules, actin filaments, and intermediate filaments. These structures give the cell its shape and help organize the cell's parts. In addition, they provide a basis for movement and cell division.

Cytoskeleton mantains cell form and participates in transport of vesicles and other components.

Explanation: Cellular cytoskeleton is a protein scaffolding composed in eucariotic cells by microfilaments placed near cell membrain to mantain cell form, microtubules that function as highways to transport vesicles with neurotransmitters, fatty acids, etc from cytoplasm to cell membrain and viceversa and intermediate filaments that hold bigger organelles.

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.