Prokaryotic and Eukaryotic Cells
Hey guys, welcome to this Mometrix video on eukaryotic and prokaryotic cells.
In this video, we will take a look at what each is, and how they are different.
Eukaryotes can be defined as any organism that has a cell or cells that are complex; more specifically, they have a membrane-bound nucleus where all their genetic information is stored. The nucleus is not the only organelle contained within a eukaryotic cell membrane, but a membrane-bound nucleus is unique to eukaryotes. All of the eukaryotic cell’s DNA is linear, and is stored within the nucleus. Eukaryotes can contain several other membrane-bound organelles, like a golgi apparatus, endoplasmic reticulum, mitochondrion, and so on! Eukaryotic cells are large cells generally between 10-100 micrometers.
Examples of Eukaryotic Cells
Guess what? You are a eukaryote, and all the cells that make you up are eukaryotic.
Some other examples of eukaryotes include protists, fungi, plants, and animals.
Prokaryotic cells, on the other hand, are not quite as complex as eukaryotic cells. A prokaryote is a non-complex, single-celled organism that does not contain a nucleus, nor does it contain any membrane-bound organelles. It’s important to note that eukaryotes can be unicellular as well, but a prokaryote will is always unicellular. All of a prokaryote’s DNA is circular and floats freely within the cytoplasm of the cell. Prokaryotes are much smaller than eukaryotes; they range in size from 1 to 5 micrometers.
Examples of Prokaryotes
Examples of prokaryotes include bacteria and archaea.
I hope that this overview was helpful for you. See ya next time!
Frequently Asked Questions
What is the difference between prokaryotic and eukaryotic cells?
Prokaryotic cells are much simpler than eukaryotic cells as they are usually smaller, single-celled organisms that do not have a nucleus or any membrane-bound organelles.
Where is the DNA located in a eukaryotic cell?
In eukaryotic cells, DNA is mostly contained in chromosomes within the nucleus, although there is some DNA in mitochondria and chloroplasts.
Do eukaryotes have a cell wall?
Some eukaryotes have a cell wall, including plants, some fungi, and some protists. Animal cells are eukaryotic cells that do not contain a cell wall.
Do prokaryotes have a cell wall?
Most prokaryotic cells have a rigid cell wall, but the composition of the cell wall differs between the Bacteria and Archaea domains.
Do prokaryotic cells have a nucleus?
Prokaryotic cells do not have a nucleus and this is one of the characteristics that differentiates a prokaryotic cell from a eukaryotic cell.
Do prokaryotic cells have DNA?
Prokaryotic cells do have DNA, but it is located in the center of cell in a region referred to as a nucleoid.
Do prokaryotic cells have mitochondria?
Prokaryotic cells do not have membrane-bound organelles and thus do not have mitochondria.