The main difference between prokaryotic and eukaryotic cells is that eukayrotic cells have a nucleus and membrane-bound organelles, while prokaryotic cells lack these structures. Prokaryotic cells are the simplest of all living things, and they only exist as unicellular bacteria. All multicellular organisms and higher-order bacteria are comprised of eukaryotic cells.
Prokaryotes and eukaryotes also differ in terms of cell size. According to the University of Maryland, prokaryotic cells are typically about 0.2 to 2.0 micrometers in diameter, while eukaryotic cells are between 10 and 100 micrometers in diameter. Although both types of cells may have flagella, the structure of these flagella is different. Those of prokaryotic cells consist of two protein building blocks, while those of eukaryotic cells are comprised of complex arrangements of microtubules.
While prokaryotic cells do not contain membrane-bound organelles, they do contain ribosomes. However, these are smaller than the ribosomes found in eukaryotic cells. The DNA of prokaryotic cells is also circular rather than linear, as it is in eukaryotes. The two types of cells also divide in different manners: prokaryotic cells by binary fission and eukaryotic cells by mitosis. Sexual reproduction in prokaryotes involves only the transfer of DNA fragments between two cells, while sexual reproduction in eukaryotic cells occurs by the process of meiosis.Learn More
Though both meiosis and mitosis involve the division of a cell, meiosis generates a cell used for sexual reproduction, while mitosis generates a cell used for growth. Mitosis produces two cells that are identical to the parent cell. Meiosis produces four cells that each contain half the number of chromosomes of the parent cell. Chromosomes are DNA containing genetic information.Full Answer >
The main difference between a newspaper and a magazine is that newspapers are written for a general audience, while magazines are for specific types of audiences. Newspapers are generally published daily, while magazines are usually published weekly or monthly.Full Answer >
The two domains of prokaryotes, which are archae and bacteria, contain the common organisms of cyanobacteria, halophiles and hyperthermophiles. Prokaryotes occur in many forms, and some species are more common than others. Of the two prokaryotic domains, the bacteria domain is the most populous and diverse.Full Answer >
Prokaryotes do not have mitochondria. A prokaryote is a cell that does not contain membrane-bound structures called organelles. A mitochondrion is an organelle, but because prokaryotes do not have organelles, they do not have mitochondria.Full Answer >