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.
Rough ER is mainly found near the nucleus and the Golgi apparatus, whereas smooth ones extend to the periphery of the cell. The rough endoplasmic reticulum is studded with ribosomes, which give the granular appearance.The smooth ER has very few or no ribosomes.roportion: The proportion of smooth endoplasmic reticulum is very small, when compared to that of rough ER. Smooth ER is mostly found in cells that are actively involved in synthesis and metabolism of lipids. It is prominently seen in the liver, ovaries, testes, muscles, etc.