Question

what is prokaryotic cells​

Answer 1

Answer:

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Prokaryotic cells are single-celled microorganisms known to be the earliest on earth. Prokaryotes include Bacteria and Archaea. The photosynthetic prokaryotes include cyanobacteria that perform photosynthesis.

A prokaryotic cell consists of a single membrane and therefore, all the reactions occur within the cytoplasm. They can be free-living or parasites.

Characteristics of Prokaryotic Cell

Prokaryotic cells have different characteristic features. The characteristics of the prokaryotic cells are mentioned below.

• They lack a nuclear membrane.

• Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent.

• The genetic material is present on a single chromosome.

• The histone proteins, the important constituents of eukaryotic chromosomes, are lacking in them.

• The cell wall is made up of carbohydrates and amino acids.

• The plasma membrane acts as the mitochondrial membrane carrying respiratory enzymes.

• They divide asexually by binary fission. The sexual mode of reproduction involves conjugation.

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Answer 2

Answer:

Prokaryote, also spelled procaryote, any organism that lacks a distinct nucleus and other organelles due to the absence of internal membranes. The prokaryotic cell membrane is made up of phospholipids and constitutes the cell's primary osmotic barrier.