What is the jellylike substance inside cells called?

The jellylike substance inside cells is called cytoplasm. This semi-fluid material fills the space between the cell membrane and the nucleus, serving as a medium where various cellular processes take place. It contains a mixture of water, salts, and organic molecules, providing a supportive environment for the cell's organelles and facilitating the movement of materials around them. The cytoplasm plays a crucial role in cellular functions such as metabolic pathways, signaling, and the transport of genetic material during cell division. Understanding the role of cytoplasm is essential, as it is fundamental to the overall functioning and health of the cell.

The other options refer to specific components or structures within the cell. The nucleus houses the cell's genetic material, the endoplasmic reticulum is involved in protein and lipid synthesis, and chloroplasts are specific to plant cells and are responsible for photosynthesis. Each of these components has distinct functions, but the jellylike cytoplasm is key to maintaining the cellular environment.