Astronomy 2021A/B Lecture 5: Chapter 5 Notes
9 Feb 2017
School
Department
Course
Professor
Document Summary
Chapter 5: the nature of life on earth. Order: the materials in living organisms always have some type or order organized in a way to make cells, and work efficiently. A necessary condition for life but not a sufficient condition. Reproduction: needs to be able to reproduce. If it is sterile, needs to be a product of reproduction: there are borderline cases- like viruses. They cannot reproduce on their own, but once they get inside you, they can take over your immune system and reproduce on living organisms. Another example is prion: messed up protein. Instead of making more of itself, it makes the. Growth and development other protein like it which causes more of it to exist: living organisms grow and develop close to their hereditary genes. Growth and development does not always mean something is alive, for instance look at fire.
