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.
The rough endoplasmic reticulum (RER) which is continuous with the outer membrane of the nuclear envelope plays an important role in the sorting of proteins destined for various other locations in the cell, like the Golgi apparatus, the lysosomes and the plasma membrane.here are two types of endoplasmic reticulum (ER) - smooth and rough. The rough kind is covered with ribosomes on its outer surface and is involved in protein processing and sorting. The smooth ER is not associated with ribosomes and functions in lipid metabolism. See Figure 10.1.