Prokaryotic Cells Flashcards
Give an example of a prokaryotic organism
Bacterium
Describe the nucleus
Lack a true nucleus
It contains a nucleoid
What is a nucleoid?
An area in the cell that contains all or most of the genetic material but it is not surrounded by a nuclear membrane
How is the DNA found?
DNA is found in a ring
What do these organisms generally look like?
They are generally single cells organisms
describe their organelles
They lack membrane bound organelles
Describe ribosomes in this organism
They contain ribosomes that are smaller than that of a eukaryotic cell
We measure them at 70s ribosomes
Describe cilia and flagella
It contains both cilia and flagella
Flagella are made of clusters of small strands of protein
What protects the cell?
It contains a cell wall made of peptidoglycan (protein and sugar complex
What’s the general size of the cell?
These cells are smaller than those of a eukaryotic organism
1-10 micrometers
Closer to 1 is more common
What is the bacteria kingdom?
Monera
Where can we find plasmids?
In bacteria
What are plasmids
Small, circular, double-stranded DNA molecules that are distinct from a cell’s chromosomal DNA
What do plasmids do?
Plasmids provide bacteria with genetic advantages
Ex. Antibiotic resistance
What does prokaryotic mean
Before the nucleus
