Biology 1002B Study Guide - Quiz Guide: Archaea, Microtubule, Mitosis
Document Summary
8. 1 the cycle of cell growth and division: Scientists have known since the early 19th century that all life on earth is composed of cells and their products. All cells are descended from previous cells in an unbroken chain of cell division. New progeny cells are needed in order to expand population size, multicellular tissue growth, asexual reproduction and replacement of cells lost to wear and tear. If cells divide too quickly, daughter cells may be too small or lack essential cytoplasm and genetic material which is why cell cycle regulation is important. Newly formed prokaryotic cells such as e coli have to double in size, replicate its circular chromosome and move each of the 2 daughter chromosomes into its own progeny cells for cell division. The entire mechanism for prokaryotic cell division is binary fission in the bacterial cell cycle. 1) b period: a bacterial cell has an origin of replication at the beginning of replication.
