Prokaryote
A unicellular organism that lacks a nucleus and membrane bound organelles
A prokaryote is a type of unicellular organism that lacks a nucleus and membrane-bound organelles. These organisms are typically small and simple in structure, ranging from 0.2 micrometers to 5 micrometers in size. Prokaryotes include bacteria and archaea, which are considered the oldest living organisms on Earth, having existed for billions of years.
Prokaryotes reproduce asexually through binary fission, where the cell divides into two identical daughter cells. They are also capable of horizontal gene transfer, where genetic material is passed between individual cells of the same or different species. This contributes to their ability to rapidly adapt to changes in their environment.
Prokaryotes play a vital role in the ecosystem, including carbon and nitrogen cycling, decomposition, and symbiotic relationships with other organisms. They are also used in biotechnology, such as in the production of antibiotics and industrial enzymes.
In summary, prokaryotes are unicellular organisms that lack a nucleus and membrane-bound organelles, reproduce asexually through binary fission, are capable of horizontal gene transfer, play important roles in the ecosystem, and are used in biotechnology.
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