Unicellular organism that lacks a nucleus
Prokaryote
The unicellular organism that lacks a nucleus is called a prokaryote. Prokaryotes are single-celled organisms (such as bacteria) that do not have a distinct nucleus surrounded by a nuclear membrane. Instead, their genetic material is contained within a single circular chromosome that is located in the cytoplasm of the cell. Prokaryotes also lack other membrane-bound organelles, such as mitochondria, chloroplasts, and endoplasmic reticulum. Despite their simple structure, prokaryotes are able to carry out a wide range of biological functions and play important roles in many ecosystems.
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