Endoplasm

Definition

Endoplasm is the inner, dense part of the cytoplasm in unicellular eukaryotic organisms. It plays a crucial role in cellular processes such as nutrient absorption and movement.

5 Must Know Facts For Your Next Test

1. Endoplasm is distinguished from ectoplasm, which is the outer, less dense layer of the cytoplasm.
2. It contains organelles like vacuoles, mitochondria, and sometimes nuclei in multinucleate cells.
3. The endoplasm is essential for intracellular transport and houses various metabolic activities.
4. In protozoa like amoebas, endoplasmic flow contributes to pseudopod formation and locomotion.
5. It is more granular and viscous compared to the ectoplasm due to its higher concentration of organelles and molecules.

Review Questions

Related terms

Ectoplasm: The outer, less dense layer of cytoplasm that surrounds the endoplasm.

Cytoplasmic Streaming: Movement of fluid substance within a cell that aids in the distribution of nutrients and organelles.

Pseudopodia:

Temporary projections of eukaryotic cell membranes used for motility or ingestion.