Cytostome

Definition

A cytostome is a specialized cell structure in certain unicellular eukaryotic organisms, functioning as the cell's 'mouth.' It is involved in the ingestion of food particles.

5 Must Know Facts For Your Next Test

1. Cytostomes are primarily found in protozoa, such as ciliates and some flagellates.
2. The cytostome is often associated with a feeding groove or oral groove that directs food particles to it.
3. It plays a crucial role in phagocytosis, where the cell engulfs solid particles into food vacuoles for digestion.
4. The structure and complexity of the cytostome can vary significantly among different species of protozoa.
5. Disruption or malfunction of the cytostome can impair an organism’s ability to ingest nutrients, affecting its survival.

Related terms

Phagocytosis:

The process by which a cell engulfs large particles or microorganisms through its membrane.

Oral Groove: A ciliated channel found in certain protozoa that directs food particles towards the cytostome.

Food Vacuole: A membrane-bound sac within some cells where ingested food is digested.