Question

explain all about prokaryotic cells in detail with examples? explain as long ..thanku​

Answer 1

Answer:

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Prokaryotic Cell Definition

Prokaryotic cells are cells that do not have a true nucleus or membrane-bound organelles. Organisms within the domains Bacteria and Archaea have prokaryotic cells, while other forms of life are eukaryotic. However, organisms with prokaryotic cells are abundant and make up much of Earth’s biomass.

Prokaryotic Cell Overview

Organisms that have prokaryotic cells are unicellular and are called prokaryotes. Prokaryotic cells can be contrasted with eukaryotic cells, which are more complex. Eukaryotic cells have a nucleus surrounded by a nuclear membrane and also have other organelles that perform specific functions in the cell. A prokaryotic cell contains only a single membrane, which surrounds the cell as an outer membrane.

All of the reactions within a prokaryote, therefore, take place within the cytoplasm of the cell. While this makes the cells slightly less efficient, prokaryotic cells still have a remarkable reproductive capacity. A prokaryote reproduces through binary fission, a process which simply splits duplicated DNA into separate cells. Without any organelles or complex chromosomes to reproduce, most prokaryotic cells can divide every 24 hours, or even faster with an adequate supply of food.

While many prokaryotic cells have adapted to free-living within the environment, many more have adapted to live within the gut of other organisms. These commensal organisms survive by breaking down molecules inside the gut and allow the organism they are living within the ability to digest a wider variety of foods. For example, the human gut contains 2-3 pounds of bacteria, which have evolved to help us digest complex carbohydrates, proteins, and fats.

Examples of Prokaryotic Cells

Bacterial Cells

Bacteria are single-celled microorganisms that are found nearly everywhere on Earth, and they are very diverse in their shapes and structures. There are about 5×1030 bacteria living on Earth, including in our own bodies; in the human gut, bacteria outnumber human cells ..

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Answer 2

Answer:

Prokaryotic cells are cells that do not have a true nucleus or membrane-bound organelles. Organisms within the domains Bacteria and Archaea have prokaryotic cells, while other forms of life are eukaryotic.

Prokaryotes lack an organized nucleus and other membrane-bound organelles. Prokaryotic DNA is found in a central part of the cell called the nucleoid. The cell wall of a prokaryote acts as an extra layer of protection, helps maintain cell shape, and prevents dehydration.

Most prokaryotes carry a small amount of genetic material in the form of a single molecule, or chromosome, of circular DNA. The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane.

Examples of prokaryotes are bacteria and archaea. Examples of eukaryotes are protists, fungi, plants, and animals

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