Chapter 8- INCOMPLETE.docx

Chapter 8- INCOMPLETE.docx - Chapter 8 An Introduction to...

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

View Full Document Right Arrow Icon
Chapter 8: An Introduction to Metabolism Metabolic Pathways - All of the chemical processes in a cell are called metabolism; you can think of this as an elaborate road map of thousands of chemical reactions arranged in intersecting metabolic pathways. These pathways start with a specific molecule, which is then altered in a series of defined steps (each catalyzed by an enzyme), resulting in a certain product. (Can be 1+ starting molecules or products) - Like traffic lights, mechanisms regulate enzymes based on metabolic supply and demand. o Catabolic pathways- Release energy by breaking down complex molecules to simpler compounds (ex. Cellular respiration breaking down glucose to CO2 and H2O) o Anabolic pathways- Consume energy to build complicated molecules from simpler ones (ex. Synthesis of amino acids/proteins) - Catabolic/anabolic pathways are like going downhill or uphill. Energy from catabolic pathways can be stored to drive the reactions of anabolic pathways. Thermodynamics - First law of thermodynamics- Energy can be transferred/transformed, but not created nor destroyed. - Second law of thermodynamics- Every energy transfer/transformation makes the universe more
Image of page 1

Info iconThis 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