cytosol of mitochondria
Difference Between Cytosol and Cytoplasm. Cytosol vs Cytoplasm. Cytosol is the intra-cellular fluid that is present inside the cells. Once the process of eukaryotes. starts, the fluid is separated by the cell membrane from the organelles (mitochondrial matrix) and. the other contents that float about in the cytosol. Cytosol is the part of the cytoplasm that is not. held by any of the organelles in the cell.