An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or facilitating chemical reactions through the introduction of electrical energy. A common example of an electrochemical cell is a standard 1.5 - volt cell meant for consumer use. This type of device is known as a single galvanic cell. A battery consists of one or more cells, connected in either parallel or series pattern.
Most of the DNA in eukaryotes is found in the nucleus, while prokaryotes, lacking a nucleus, have their DNA loose in the cytoplasm. Explanation: In eukaryotes, the genomic DNA, which makes up most of the cells DNA, is contained in the nucleus. There is additional DNA in the cells mitochondria, and still more in the chloroplast if it is a plant cell, but it is a very small amount.
Both are small. And while most of a eukaryotic cellâs DNA is in its nucleus, mitochondria have some DNA of their own as well as ribosomes to translate its genes into proteins. Nuclear DNA is in the form of double helical strands, but mitochondrial DNA is not. Though the mitochondrial genome is much smaller than a bacterial genome, both mitochondria and prokaryotes have circular DNA.