“The Cell” is the 4th Chapter in the new course of Biology for intermediate premedical students. In this chapter the students will learn about the Cells as units of life. Emergence and implications of Cell Theory. Microscopes: Resolution vs magnification of microscope, techniques to isolate components of cell, Eukaryotes and Prokaryotes.Detailed structure of a generalized eukaryotic cell as seen under light microscope and electron microscope. Plasma membrane: Fluid Mosaic Model, Characteristic properties and function of cell membrane, Cell Wall, Nuclear envelop, nucleolus, nucleoplasm, chromatin and chromosomes. Endoplasmic Reticulum: Smooth and Rough Endoplasmic Reticulum, Ribosomes, Golgi Apparatus, Lysosomes, lysosomal storage diseases, peroxisomes, Glyoxosomes, Vacuoles, Mitochondria as energy converting organelle, Plastids, proplastids, Chloroplasts as energy converting organelles, Cytoskeleton: micro filaments intermediate filament, microtubules, centrioles.