BCH2333_lecture_1_w2016 - BCH2333 Introductory Biochemistry...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
BCH2333 Introductory Biochemistry Winter 2015
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
Lecture 1 Origin of life, Basic building blocks,
Image of page 2
What is biochemistry Biochemistry is the study of life on a chemical level Biochemists use physical and chemical principles to explain biology at the molecular level. Basic principles of biochemistry are common to all living organism
Image of page 3

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

View Full Document Right Arrow Icon
Origin of life: from chemical to living age of earth > 4.6 × 10 9 years Evidence: - radiochemical dating of rocks U^238 decay to Pb^206 (ratio of 2 elements can give age of rocks) - astrophysics - geological uniformitarianism Think about the transition from chemistry to biology oldest fossils > 3.5 × 10 9 years (?) -microfossils, reminiscent of cyanobacteria – no direct evidence. Indirect only – cannot know exactly when or how life occur
Image of page 4
Primordial earth had stable gases Reducing atmosphere No O2, too reactive no complex organic molecules Oparin & Haldane (1920s) proposed Energy + atmosphere made complex organics
Image of page 5

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

View Full Document Right Arrow Icon
Urey and Miller (1953) prebiotic biochemistry Test Oparin and Haldane’s hypothesis Stanley Miller (1930-2007) Reducing atmosphere Produ organ Consistent with Oparin Haladane hypothesis
Image of page 6
Image of page 7
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