BIO 1130 Lecture Notes - Lecture 4: Archean, Monera, Heterotroph

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

1. 3 billion years, a quarter of the history of life on the planet. Prefix eu group with the true characteristics. The volume increases more rapidly than the surface area, so the surface area isn"t able to support the diffusion. Prevents a cell from getting too large. There is a huge range of cell size. A relationship of demands of the things used and it has to deal with the products in a volumetric ratio. The exchange is based on a surface area. The rate as which the surface increases in smaller than the volume. The cell can"t absorb the nutrients fast enough. For organisms that live in ideal surface to volume ratios, diffusion will do everything they need. Is not about efficiency, about the quality of life of exchanging the volume around them. Endospores extreme conditions in a dormant state as an endospore. Bacteria can secrete a protective layer that allows them to survive.