Cell Structure of eukaryotic cells

• Nucleus are surrounded by a double membrane called the envelope containing pores which allow molecules to enter and leave the nucleus
• The nucleus also contains a chromatin and a nucleolus which is the site of ribosome production
• The rough endoplasmic reticulum is a series of flattened sacs which is enclosed by a membrane with ribosomes on the surface. RER folds and produces proteins made on the ribosomes
• Smooth endoplasmic reticulum is a system of membrane bound sacs. SER produces and processes lipids
• Golgi apparatus is a series of fluid filled, flattened and curved sacs with vesicles surrounding the edges which process and packages proteins and lipids and produces lysosomes
• Mitochondria are oval shaped and bound by a double membrane called an envelope and the inner membrane is folded in to form cristae with matrix which contains all the enzymes so respiration can take place
• Centrioles are hollow cylinders containing a ring of microtubules arranged at right angles to each other and they are involved in cell division
• Ribosomes are composed of two sub units and it's where protein production takes place
• Lysosome is a vesicle containing digestive enzymes bound by a single membrane
• The cytoskeleton of the cell plays an important role in providing mechanical strength as well as aiding transport within cells and enabling movement