Robert Brown - English botanist who discovered Brownian motion and coined the term nucleus 4. All cells come from other cells. A. Later cell discoveries 1. Louis Pasteur - French chemist who disproved spontaneous generation. B. Cell division 1.
Mitosis is replication and division of the nucleus.
Cytokinesis is separation of the cytoplasm. Living cells are bounded by a lipid membrane. 1.8 nm thick 2. helps produce cell wall 3. Survey of cellular machinery. D. Internal membranes and support 1.