Bacterial chromosomes are single-stranded and circular. This means they have one cell, which is the entire chromosome itself.

Here's a breakdown:

* Single-stranded: Unlike eukaryotic chromosomes, which are made of two strands of DNA, bacterial chromosomes only have one strand.

* Circular: The single strand of DNA is shaped like a circle, forming a closed loop.

This circular structure helps with efficient replication and packaging of the bacterial genome.