Final answer:
The cytoplasm is the component of the moneran (a group of prokaryotic organisms) that holds all parts within the cell in place, providing structural support and distributing nutrients.
Step-by-step explanation:
The part of the moneran that holds all parts in place is the cytoplasm. Monerans, which are a group of prokaryotes, generally do not have a complex internal structure, but they do have this gel-like substance that fills the interior of the cell.
The cytoplasm serves several critical functions within a bacterial cell. It hosts the molecular machinery necessary for the synthesis of proteins and other essential molecules, holds various organelles in place, and maintains the appropriate pressure and pH to support the cell's biochemical processes. Additionally, the cytoplasm helps to distribute nutrients and dissolve cellular waste.
Although monerans may have structures like flagella or plasmids, these do not function to hold the cell’s components in place. Flagella, for example, are primarily used for movement. Hereditary material, such as DNA, is contained within the nucleoid, but it is the cytoplasm that encompasses both the nucleoid and other cellular components, maintaining the structure and integrity of the cell.