Cholera

Cholera is a disease caused by the bacterium Vibrio cholerae, a prokaryotic organism. The bacteria infect the small intestine and produce a toxin that disrupts osmosis in the intestinal cells, causing watery diarrhoea and vomiting.

Prokaryotic cell structure:
They are single-celled organisms, such as bacteria. They are much smaller and simpler than eukaryotic cells and they don't have any membrane-bound organelles (like a nucleus).
Plasma membrane - mainly made of lipids and proteins. It controls the movement of substances into and out of the cell.
Cell wall - it supports the cell.
The flagellum - a long, hair-like structure that rotates to make the bacteria move, but not all bacteria have one.
DNA - it floats free in the cytoplasm. It is circular DNA, present as one long, coiled-up strand.
Plasmids - small loops of DNA that aren't part of the chromosome. They contain genes for things like antibiotic resistance…