Question

“Endo” means “internal” or “within.” “Symbiosis” means “a mutually beneficial relationship.” How do modern cells demonstrate endosymbiosis?(1 point)
Responses

Cells are inside the body and work together to function as a whole organism.
Cells are inside the body and work together to function as a whole organism.

An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.
An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.

Cells benefit from one another by providing different functions and are found within organ systems of the body.
Cells benefit from one another by providing different functions and are found within organ systems of the body.

Organelles are inside cells and provide cells with energy and proteins, while the cellular membrane shelters the organelles.

Answer 1

The best response illustrating how modern cells demonstrate endosymbiosis is:

**An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.**

This describes the theory of endosymbiosis, where certain organelles, such as mitochondria and chloroplasts, are thought to have originated from free-living prokaryotic organisms that were engulfed by ancestral eukaryotic cells, leading to a mutually beneficial relationship.