Final answer:
Prokaryotic cells are always unicellular, are less complex due to the absence of a nucleus and membrane-bound organelles, and their DNA is a single circular chromosome. They do not form part of multicellular organisms like animals or humans and are generally smaller in size without unique organelles.
Step-by-step explanation:
Prokaryotic cells have distinct characteristics that differentiate them from eukaryotic cells. Here are the correct statements about prokaryotic cells and an explanation for each:
- Prokaryotic cells are always unicellular: This means they consist of a single cell. Unlike multicellular organisms, each individual prokaryotic cell is capable of functioning independently.
- Prokaryotic cells are less complex: They do not have a nucleus or membrane-bound organelles. Their DNA is generally a single circular chromosome that floats freely in the cell in an area called the nucleoid.
- Prokaryotic cells do not have a nucleus: This is a defining feature of prokaryotes; instead of a nucleus, their genetic material is not enclosed.
To address the incorrect statements: Prokaryotic cells do not make up animals and humans as these are made up of eukaryotic cells. Prokaryotic cells are not very large; in fact, they are usually smaller and simpler than eukaryotic cells. Also, they do not have many unique organelles; rather, they lack membrane-bound organelles altogether.