why do mitochondria have dna

. The inner membrane encloses a matrix, which is rich in proteins, lipids, ribosomes, RNA and one or two circular DNA molecules. The number of mitochondria in a cell varies considerably and depends on the mature of the cell. Cells with very high-energy requirements possess very ..

These may be cylindrical, rod-shaped or spherical and distributed in the cytoplasm. Each mitochondrion is bound by a double membrane. The inner membrane is folded into ridges called cristae, which increase the surface area of the membrane...

Nucleic acids are of two types. They are DNA and RNA. In higher cells, DNA is localised mainly in the nucleus within the chromosome. A small amount of DNA is present in the cytoplasm also it is contained in the mitochondria and chloroplas..

Deoxyribose Nucleic Acid (DNA) - With the exception of a few viruses, DNA forms the genetic material in all living organisms. In the prokaryotic cells DNA occurs in the cytoplasm. In the eukaryotic cells it is confined largely to the nucleus and forms the main componen..

With the exception of a few viruses, DNA forms the genetic material in all living organisms. In the prokaryotic cells DNA occurs in the cytoplasm. In the eukaryotic cells it is confined largely to the nucleus and forms the main component of chromosomes. A small amount of h..

Deoxyribose Nucleic Acid (DNA) - With the exception of a few viruses, DNA forms the genetic material in all living organisms. In the prokaryotic cells DNA occurs in the cytoplasm. In the eukaryotic cells it is confined largely to the nucleus and forms the main componen..

The DNA used as a carrier for transferring a fragment of foreign DNA into a suitable host is called vehicle DNA. Two types of DNA are used as vehicles: plasmid DNA and bacteriophage DNA..

The bacteriophages (or phages), are viruses that infect and kill bacteria. Their circular DNA is also suitable for use as a vehicle DNA..

The most significant feature of DNA molecule is its capacity to make its own identical copies. This property is called replication. It occurs regularly during the synthetic phase of the cell cycle, every time a cell divides. During replication, the DNA molecule unwinds itself fr..

The most significant feature of DNA molecule is its capacity to make its own identical copies. This property is called replication. It occurs regularly during the synthetic phase of the cell cycle, every time a cell divides. During replication, the DNA molecule unwinds itself fr..