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.
3. ER without ribosomes is called smooth endoplasmic reticulum and contains enzymes for lipid biosynthesis, especially the synthesis of phospholipids and steroids. The smooth endoplasmic reticulum forms transition vesicles to transfer molecules produced in the rough ER to the Golgi complex.) provide a surface area for protein and lipid synthesis; 2) form a pathway for transporting molecules within the cell; and 3) provide a storage area for molecules the cell has synthesized. 1. Rough Endoplasmic Reticulum ER with ribosomes attached is called rough endoplasmic reticulum (see Fig. 31, Fig.