{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

CHAPTER 4 - CHAPTER 4 Primordial Soup(Heterotroph...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER 4?? Primordial Soup (Heterotroph Hypothesis) o Life started from “primordial soup” of simple inorganic chemicals in the oceans o First life forms used organic compounds for energy o Oparin & Haldane (1920s) o Urey & Miller Experiments o Evidence: reduced atmosphere + electrical energy = organic compounds “seeds” from space (Panspermia Hypothesis) o Microbes from space traveled on meteorites to earth o Evidence: organic compounds thru meteorites/comets (appolo 12, streptococcus mitis) Life from the depths (Chemoautotrophic Hypothesis) o Life started in ocean – made their own food from chemicals o Evidence: hyperthermophiles = oldest organisms + no radiation EVOLUTION!! RAWRAWR OLALALA o Compounds common to all organisms would have been present in a universal ancestor Species divergence: after critical systems were in place (DNA, RNA, proteins, ATP) o Metabolism is the same for all life o Genetic code is universal o Fossil evidence: stromatolite (layers of bacteria/minerals)
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern