Lecture 10 Notes - Cellular Respiration How I Turn Into...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Cellular Respiration: How I Turn Into Available Energy (ppt Clicker Question) The answer is A. Recall that the small intestines is the major site where nutrients are absorbed. Fetal Pig Dissections (ppt Series) Use this series of slides as an illustration of what you’ll do in lab 2. p Slides help to highlight what you should be thinking about during dissections. (ppt) Cells differ due to specialization of function. However Cell Respiration is used to burn carbohydrates to form ATP {the energy molecule used to fuel the life functions of a cell}. General “Primer” for Cell Respiration: Rather that write a narrative for each ppt slide, I’ll use the following to summarize the main concepts of Randy’s lecture today Then you should review the history of discovery using Randy’s slides. How do living things (or single cells) harvest energy from nutrients? As we said previously, ATP is involved. Of the millions of ATP molecules in many cells, about half are used every second to provide energy (the phosphate bonds are broken). Therefore, ATP must be continually recycled or else it will be used up in two seconds. The question becomes how is energy from organic nutrient molecules bound to ATP and how does ATP transfer energy? RECALL: The energy in ATP (adenosine triphosphate) is bound in the phosphate groups. Removing the outer phosphate group (remember, there are three) will yield kilocalories of usable energy [ATP à ADP]. In contrast energy is required to put a phosphate back onto the molecule [ADP à ATP] back onto the molecule. This process of adding phosphates to molecules is called phosphorylation . And it costs energy to carry it out. The transfer of energy that occurs when an ADP molecule is phosphorylated involves a flow of electrons (like an electric current) and is handled by special energy carrier molecules. One of the important types of energy carrier molecules used during cell respiration is NADH & NAD + [Vit B3, also called Niacin] , you don’t need to know the others for this class. 1
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
The transfer of electrons mentioned above is called an oxidation-reduction reaction . Oxidation is the removal of electrons from a molecule, which increases the net charge on the molecule (by removing negatively-charged electrons, the molecule becomes more positive).
Image of page 2
Image of page 3
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