Question

Do prokaryotes have a cell membrane?

Answer 1

Hint: Prokaryotes are microscopic single celled organisms. It neither has a distinct nucleus nor specialized organelles. Bacteria and archaea are some of the prokaryotes. Genetic material is not stored in a membrane bound nucleus. But it is stored in the nucleoid that floats in the cytoplasm in the cell. It is smaller than eukaryotes. It is an important thing in living organism life because it will decompose the dead organism and produce the nutrients.

Complete explanation:
All prokaryotes have a cell membrane except few. They have distinct cellular regions. In prokaryotes DNA bundles are available in the nucleoid. It has a cellular structure called unicellular. DNA looks like a rounded form. All prokaryotes have a cell wall, DNA, ribosome, cytoplasm and cell membrane. Prokaryotes are simple in structure and very small. So, it doesn't contain internal bounded organelles with the cytoplasm. Prokaryotes are lacking in cell nuclei and other organelles because of their small structure. Cell membrane is available in all cells and its major function is to divide the interior of the cell from the outside. All cell membranes have a lipid bilayer that is semi permeable. The main function of cell membrane is to provide the transport of material entering and leaving the cell.
Important function of cell membrane is to avoid toxic substances entering the cells. It contains receptors and channels. It allows only specific molecules like ions, nutrients, wastes and metabolic products. It is incompatible with the metabolism conducted within the organelles. It is the thin layer which surrounds the cytoplasm of the cell. Membrane also gives protection to the cell. It acts as an enzyme to perform a metabolic process. It is called the intracellular organism. It is used for transportation. It is important in cell-to-cell communication. In tissues it will send the messages from one to another very fastly.

Note:
The nutrients produced by the decomposition process will be reused. It is also used for the metabolic process. Prokaryote is also important in the nitrogen and carbon cycle in the human body. It will produce nutrients in the digestive tracts of humans and animals. It is also used in the production of human foods. It also transfers adaptive genes to bacteria in the form of plasmids. Photosynthetic prokaryotes are the most important producer on the planet.