HESI Entrance Practice Exam 2026 - Complete Prep Guide

The term that describes the contents of the cell, apart from the nucleus and the cell membrane, is cytoplasm. Cytoplasm is a gel-like substance found between the cell membrane and the nucleus, encompassing all the organelles and various molecules that are crucial for cellular functions. It plays an essential role in maintaining cell shape and providing a medium for biochemical reactions to occur.

Cytoplasm consists of the cytosol, which is the fluid portion, and the organelles that reside within it, such as mitochondria, endoplasmic reticulum, and ribosomes. This distinction makes it clear why cytoplasm is the most fitting term in this context.

Protoplasm is a broader term that refers to the living substance of a cell, including both the cytoplasm and the nuclear material. While it is relevant, it does not specifically refer to just the cell contents outside the nucleus. Matrix typically refers to the material in which structures are embedded and is more often used in contexts like connective tissue or the mitochondrial matrix. Thus, these terms do not specifically describe the cellular contents aligned with the question.