First World War erupts Four days after Austria-Hungary declared war on Serbia, Germany and Russia declare war against each other, France orders a general mobilization, and the first German army units cross into Luxembourg in preparation for the German invasion of France.
The endoplasmic reticulum (ER) is a series of interconnected membranes or flattened sacs adjacent and connected to the nuclear membrane. The ER comes in two different morphological forms: smooth endoplasmic reticulum (sER) and rough endoplasmic reticulum (rER). The primary function of the sER is to serve as a platform for the synthesis of lipids (fats), carbohydrate (sugars) metabolism , and the detoxification of drugs and other toxins.
You might recall that a ribosome is a cell organelle that helps in assembling chains of amino acids. It's made of ribosomal RNA, or rRNA, and protein. Ribosomes are located on the rough endoplasmic reticulum, or RER, that surrounds a cell's nucleus. In fact, ribosomes are the reason that the RER is called rough; they give the endoplasmic reticulum a rough appearance when viewed under a microscope.