Question:
In prokaryotes, the genetic material is:
In prokaryotes, the genetic material is:
Updated On: Jul 28, 2022
- linear DNA with histones
- circular DNA with histones
- linear DNA without histones
- circular DNA without histones
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The Correct Option is D
Solution and Explanation
In prokaryotes, the generic material consists of single circular DNA without any associated protein i.e., without histones, lying in a tangled mass (nucleoid).
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Concepts Used:
Prokaryotic Cells
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 contains 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 such as:
- Lack of a nuclear membrane.
- Absence of Mitochondria, Golgi bodies, chloroplast, and lysosomes.
- Presence of genetic material on a single chromosome.
- Lack of histone proteins in the constituents of eukaryotic chromosomes.
- The cell wall is made up of carbohydrates and amino acids.
- The plasma membrane acts as the mitochondrial membrane carrying respiratory enzymes.