They have their own DNA.They also have 70s ribosomes.
their own DNA
Monerans lack membrane-bound organelles which are present in other organisms. These membrane-bound organelles include the mitochondria and chloroplasts. An example of a monera is bacteria.
Yes, Mitochondria are organelles inside of Cells, which contain Nuclei.
Their own set of genetic material still capable of coding for a few proteins which these organelles use. In a circular form that indicates their bacterial origins.
No, Staphylococcus aureus is a prokaryote. Prokaryote's lack membrane bound organelles like mitochondria, lysosomes, nucleus, chloroplast, etc.
mitochondria, nucleus, cytoskeleton (but cytoskeleton should not count as an organelle since it is just a protein network in cytoplasm). Sperm cells probably also have some endoplasmic reticulum and some other organelles.
Cheek cells are eukaryotic, meaning they have a membrane-bound nucleus which contains the cell's DNA. They also have other membrane-bound organelles, like mitochondria. Bacteria, including E. coli, are prokaryotic, meaning they lack a nucleus, and their DNA is contained withing a circular chromosome in the cytoplasm, and they lack other membrane-bound organelles, such as mitochondria.
There is a theory that chloroplast and mitochondria were independent organisms. Since they were, they would have their own DNA. And it is true that they do. It is interesting that you get your mitochondria from only your mother. There are many studies have used mtDNA to trace the evolution and migration of human species, including when the common ancestor to modern humans and Neanderthals lived.
While eubacteria may lack the organized organelles found in eukaryotic cells, many eubacteria have specialized internal membranes. Cyanobacteria, for example, have membranes that contain chlorophyll and other chemicals required to carry out photosynthesis.
Prokaryotic cells lack any membrane bound organelles such as a nucleus, mitochondria, lysosomes, chloroplasts, golgi apparatus, etc. These membrane bound organelles are only found in eukaryotic cells.
They lack membrane enclosed organelles
Yes, but not very much. Red blood cells lack most of the typical organelles of a cell, including a nucleus and mitochondria.