This presentation covers the ultrastructure of the cell and the microscopic features related to the basic unit of life.

1. Cell Ultrastructure
Dr. Romeo Teves

4. Table 3.1: Cell organelles and functionsviva
Cell organelles Functions Remarks/characteristics
Plasma membrane Selective barrier, cell adhesion Bilipid layer
rER Synthesis and transfer of proteins to Golgi complex Flattened sheets with attached ribosomes
sER Lipid and steroid metabolism Flattened sheets without ribosomes
Golgi apparatus Posttranslational modification of proteins Flattened sheets
Secretory vesicles Transport and storage of secretory proteins Small membrane-bound vesicles
Mitochondria Power house of cell
Outer and inner membranes
Inner membrane shows cristae (folds)
Lysosomes Disintegration of phagocytosed material Membrane-bound vesicles
Peroxisomes Oxidation of fatty acids, detoxification Membrane-bound vesicles
Ribosomes Protein synthesis Have 40S and 60S subunits