By Catherine Beyer. The ankh is the most well known symbol to come out of ancient Egypt. In their hieroglyphic system of writing the ankh represents the concept of eternal life, and that is the general meaning of the symbol. Construction of the Image:
The outer layer of the double membrane is much more permeable than the inner layer, which features a number of embedded membrane transport proteins. Enclosed by the chloroplast membrane is the stroma, a semi-fluid material that contains dissolved enzymes and comprises most of the chloroplast's volume. Since, like mitochondria, chloroplasts possess their own genomes (DNA), the stroma contains chloroplast DNA and special ribosomes and RNAs as well.
Both mitochondrion and chloroplast are semi autonomous organelles with DNA. Majority of proteins required for mitochondrion and chloroplast are coded by genes of the nucleus.Only some proteins are coded by the DNA of mitochondrion and chloroplast. That is why; these organelles are called as semi-autonomous organelles.oth mitochondrion and chloroplast are semi autonomous organelles with DNA. Majority of proteins required for mitochondrion and chloroplast are coded by genes of the nucleus.