Answer:
Prokaryotes are unicellular organisms with simple internal structures without a nucleus and membrane-bound organelle.
Step-by-step explanation:
Cells always come into one of two major classifications – prokaryotes and eukaryotes. Today we are going to talk about Prokaryotes (the biggest group of organisms on the planet).
Prokaryotes have/are:
- unicellular organisms
- simple internal structures
Prokaryotes don't have/are:
- a nucleus
- a membrane-bound organelle.
The nucleus of a cell has lots of genetic information and does all the main controlling of the cellular activity. Prokaryotes are sometimes referred to as the brain of the cell. Once again, Prokaryotes do not have a nucleus. Their "nucleus" is a genetic material that forms ring-like strands dispersed throughout the cytoplasm of the cell. They are the oldest and primitive type of cell on earth. Scientists believe they appeared about four billion years ago. Most prokaryotes are bacteria, such as escherichia coli (E. coli) and staphylococcus, which can cause infections. Prokaryotes reproduce by mitosis.
Hope this helped!