What is the jellylike substance that makes up all living cells called?

The jellylike substance that makes up all living cells is called protoplasm. Protoplasm encompasses both the cytoplasm and the nucleus of the cell, representing the living content within the cell that facilitates the various biological processes necessary for life. It contains water, salts, and organic compounds, which provide the medium for cell activities such as metabolism, growth, and reproduction.

Cytoplasm refers specifically to the substance between the cell membrane and the nucleus, while plasma is a term that can refer to the liquid component of blood in animals. The cell membrane is the protective barrier that surrounds the cell, regulating what enters and exits. Understanding the distinction between these terms is crucial for grasping the overall structure and function of cells in living organisms.