Anyone can get melasma, but it is more common among young women. Melasma often appears during pregnancy, in the second or third trimesters. Doctors don't know exactly what causes melasma, but the condition is associated with the female hormones estrogen and progesterone.
A ribosome is made of numerous proteins and RNA. Function The Golgi complex takes proteins made by the endoplasmic reticulum and exports them out of the cell as needed. It is able to keep dangerous proteins from damaging the cell which made them. It is like a packaging department ready to deliver the protein products made in the cell.
Quick Answer. The ribosomes make proteins in the cell. Cytoplasmic granules that are rich in ribonucleic acid, or RNA, compose ribosomes. Proteins are made continuously and are responsible for the function, structure and regulation of the tissues and organs in the body.