Question

which one of the following would be a unicellular organism? a an amoeba b a mitochondria organelle c a spider d a human kidney

Explanation:

Unicellular organisms are made up of a single cell. An amoeba is a single - celled organism. A human kidney is an organ in a multicellular organism (humans). A spider is a multicellular organism. A mitochondria is an organelle, not an organism.

Answer:

A. An amoeba