EAS100 Lecture Notes - Lecture 32: Chemosynthesis, Autotroph, Heterotroph

• School: University of Alberta
• Department: Earth and Atmospheric Sciences
• Course: EAS100
• Professor: Korhan Ayranci

Document Summary

Organisms absorb energy from light or from chemical substances that they consume. Energy is used to maintain processes within the organism. Energy is released as heat or other chemical substances expelled. Most living material is organized in self-contained individuals. Reproduction is the formation of new individuals. Asexual: separating off part of an individual. Sexual: sharing of material from two individuals. Population can expand while individuals remain same size. Organization of small molecules into large chain or sheet-like molecules. Fossils preserved in sedimentary rocks indicate that living organisms have changed over. The potential to develop new species is called evolution. Living species defined by the ability to breed and produce fertile offspring. Genetic makeup changes over time; new species arise. They have to use other organisms to replicate themselves. Most large organisms are divided into cells. Cells typically 0. 01 0. 05 mm diameter. Made up of organic molecules and biopolymers.