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.
Describe Eukaryotic ribosomes. It is where proteins are made. Ribosomes in Cytoplasm produce proteins that stay in the cell, Ribosomes in the RER produce proteins that will be sent out of the cell. 80S--located in Cytoplasm and RER; 70S ribosomes in Mitochondria and Chloroplasts.