Cytoplasm can be divided into: Cytosol, organelles and cytoplasmic inclusions. Cytosol is a gelatinous material and most of the space in cytoplasm when an organelle is not present. Cytosol comprises of salt, water, cytoskeleton filaments and organic molecules.he cytoplasm and the enzymes within it break down the macromolecules into small portions to facilitate energy production for the mitochondriaâs of all the cells. Cytoplasm plays an important role in the process of glycolysis as well as in the synthesis of fatty acids, amino acid and sugar.
A very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium) based on measured density, although calculations involving the space lattices of the elements show that iridium is denser.ridium is one of the rarest elements in Earth's crust, with annual production and consumption of only three tonnes. 191 Ir and 193 Ir are the only two naturally occurring isotopes of iridium, as well as the only stable isotopes; the latter is the more abundant of the two.
Word origin: Iridium comes from the Latin word iris, meaning rainbow. Discovery: British chemist Smithson Tennant discovered iridium in the residue left when crude platinum is dissolved by aqua regia in 1803. Properties of iridium. Iridium is the most corrosive resistant metal known and one of the densest metals.It is a member of the platinum family and is white with a yellowish tinge. Iridium is very hard and brittle, making it difficult to machine, form, or work.[See Periodic Table of the Elements ]. Sources of iridium.roperties of iridium. Iridium is the most corrosive resistant metal known and one of the densest metals. It is a member of the platinum family and is white with a yellowish tinge. Iridium is very hard and brittle, making it difficult to machine, form, or work. [See Periodic Table of the Elements ].