Differences between Prokaryotes and Eukaryotes.

Posted: March 29, 2013 in Cells

Prokaryotes are organisms that lacks a nucleus, or any membrane enclosed organelles. Most are found to be unicellular, made up of only one cell, however there are some that are found to be multicellular. In prokaryotes, all of their DNA, proteins and metabolites are all found in the same area surrounded by a cell membrane.

Eukaryotes, on the other hand, are organisms that consist of membrane bounded organelles. They contain a nucleus(which contains DNA), mitochondria and other membrane bounded organelles.

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From the picture above, we can see that both prokaryotes and eukaryotes have similar features, such as ribosomes, cytoplasm. Prokaryotes contains 70s ribosomes, while, eukaryotes contain 80s ribosomes. The ‘s’ refers to the rate of sedimentation in a centrifuge, and can be thought of in terms of size. The eukaryote cells being more complex is no doubt bigger than prokaryotes, Prokaryotes reproduce asexually,by binary fission, this is where the cell becomes mature enough, the  genetic material replicates,and the cell begins to cleave and separate forming two identical daughter cells. Eukaryotes reproduce via  nucleic division, which is usually mitosis, where each daughter cell receives one copy of each chromosome. Eukaryotes also reproduce sexually, through meiosis, where the daughter cell receives one copy of each chromosome from each cell.

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