Monday, November 19, 2012

Hi Everyone, I created this as an opportunity to use each other as a resource and ask any questions related to our classes.  Since this is the day before our Biochemistry assessment, I figured this would be a great opportunity using each other as a resource. 

32 comments:

  1. Question for Cell Energy:
    When do our bodies revert to anaerobic respiration?
    --Hannah Firestone

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  2. How does NADP carry Hydrogen to the Calvin Cycle, and how is ATP carried to the Calvin Cycle?
    Joe Liberman

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  3. Since photosynthesis is such a complex process and evolution is such a slow process, is it possible for a plant to survive using only the ATP from photolysis and not even use the Calvin cycle?

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  4. In the Krebs Cycle, are water and carbon dioxide the waste products?
    -Jackson Zebovitz

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  5. How do you know to describe a graph using endergonic versus exergonic?

    - John Phipps

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    Replies
    1. C'mon John endergonic and exergonic describe processes that allow the system to absorb or release energy respectively through work. In contrast, endothermic and exothermic describe processes that allow the system to absorb or release energy respectively through heat. As such, since heat and work are two independent processes they do not necessarily go in the same direction. Notice, for example that internal energy is defined as the sum of the heat and work processes done on the system.

      It is also important to realize that temperature can be independent of energy absorption. While in most cases, when work is done on a gas -such as the quick compression of a bicycle pump- the gas increases in temperature, an increase in internal energy may be manifested in various ways not related to temperature. For example, heating water at 100degC does not result in an increase in temperature but rather a change of phase (entropy increases).

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  6. Is the Krebs cycle part of anaerobic respiration or aerobic respiration?

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  7. What exactly are the Light and Dark reactions?

    -Aarohi Mahableshwarkar

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  8. Are lactic acid fermentation and alcoholic fermentation the only two things that can be produced by anaerobic respiration?


    -Brady Glantz

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  9. Are there varying numbers of ATP produced during the Krebs Cycle? Or is the number just not agreed upon?

    -Hannah Brockstein

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  10. Do the plants stop using Chlorophyll when they change the color of the leaves? If so, if it matters, What do they use?

    -Timothy Yap

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  11. Is glycolysis the first step in cellular respiration whether it is aerobic or anaerobic? Then the Kerbs cycle is the next step for aerobic and fermentation is the next step for anaerobic?

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  12. Since plants are able to cannibalize themselves during the fall to get their nutrients, if plants could not preform the calvin cycle, would they be able to survive by doing photosynthesis during the day and cannibalizing themselves at night?

    -Dani Phillips

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  13. I would just like to know what the correct/desired results of the Organic Polymers experiment actually were. The lab was very "self designed" so I just would to know what we should have gotten.

    -Josh Mendelson

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  14. What is the difference between NADPH+, NAD+, NADH2, NADPH, and FAD?
    -Andrea Neiman

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  15. Do the products from the Calvin cycle assist in Photolysis or is the energy stored and used for other purposes? Also, if the reactions of the Calvin cycle take place in the stroma, where does Photolysis occur?

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  16. What is the difference between ATP and ADP? Are they both required for photosynthesis?

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    Replies
    1. ATP is a molecule with three phosphate groups, we use it for energy. ADP is a molecule with two phosphate groups, we add a phosphate group to it and create ATP.

      -Alex Harris

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  17. Pyruvate is when a 3 carbon molecule that happens when glucose is broken down, but does it only happen in glycolysis?

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  18. Could we go over how C4 plants work and why this adaption was necessary? -Kate Meyers

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  19. What are the two main metabolic pathways compromised in photosynthesis? -hannah ginn

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  20. What is carbon fixation? -Chloe Weiss

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  21. At what point does aerobic/anaerobic respiration take place in the mitochondria? Does the mitochondria use the net ATP or can other parts of the cell use it too?

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  22. How bad were those refs? #bringbackreplacements

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  23. Since anaerobic respiration is so inefficient, why does it allow someone to sprint at speeds far greater than aerobic respiration can handle?

    Jeremy Kim

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  24. What exactly is the Krebs cycle?

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  25. Are the Krebs and Citric Cycle the same?

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  26. Does aerobic respiration yield more ATP than anaerobic respiration, and that is why it is more efficient?

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  27. Are NADP+ and NADPH the same molecule with different charges, or are they two entireyly different things?

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  28. What is the use of Creatine Phosphate?

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  29. When we exercise, when would our bodies use ATP for energy and when would they use stored glucose?

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  30. How would the human body react if it did not have any source of ATP or ADP?

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