Tuesday, September 27, 2011

Blog 7 due 10/03

Explain the following aspects of photosynthesis:
a. how the products NADPH and ATP are formed
b. how ATP, and NADPH are utilized in the Calvin Cycle

14 comments:

  1. In the beginning stages of photosynthesis in which plants obtain light energy and convert it into chemical energy, they form NADPH and ATP.

    ATP and NADPH are used to convert 3 molecules of CO2 into one molecule of a 3-carbon sugar.

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  2. You get a photon that comes in and crashes into a chlorophyll molecule. That energy is absorbed by an electron, which then uses the energy to split a water molecule into hydrogen and oxygen. Two oxygen atoms will combine to make an oxygen molecule, while the hydrogens from each water molecule will convert one NADP+ molecule into an NADPH molecule, and leave one hydrogen as a lone H+ ion.

    Meanwhile, the H+ ions created are used by an ATP synthase protein to generate ATP from ADP. The ATP synthase works by using a built up concentration of H+ ions as a source of energy, reforming water out of the hydrogens. Thus you make both NADPH and ATP

    The Calvin Cycle is the process that converts carbon dioxide into 3-phosphoglycerate, a molecule that's used to synthesize sugar and other complex molecules. The Calvin Cycle uses NADPH and ATP at specific steps to build the 3-phosphoglycerate, so I'm not sure how specific they want you to be in describing the chemistry behind the reaction.

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  3. When the process of the phosynthesis occurs, one of the first steps is to convert light energy into chemical energy. When this happens it forms two different things: ATP and NADPH. The Calvin Cycle is the cycle where it takes 3 sets carbon dioxide and transforms them into a 3-carbon sugar. This 3-carbon sugar was created by adding the 3 carbon dioxide elements together.

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  4. During the process of photosynthesis, when light energy is converted to chemical energy, if forms ATP and NADPH.

    NADPH and ATP are used to covert 3 Carbon dioxide molecules to form to make a sugar

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  5. The process of photosynthesis consists of light energy in plants converting into chemical plants, which forms ATP and NADPH.
    The Calvin Cycle uses ATP and NADPH by using them to covert 3 carbon dioxide molecules, into one 3-carbon sugar molecule.
    -Alique

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  6. NADPH and ATPare formed durring the beginning stages of photosynthesis where plants obtain light energy and convert it into chemical energy,
    ATP and NADPH are used to convert 3 molecules of CO2 into one molecule of a 3-phosphoglycerate.

    -Me:)

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  7. Photosynthesis is the process in which plants acquire light energy and convert it into chemical energy. When this occurs, two different things are formed: ATP and NADPH.
    ATP and NADPH are utilized in the Calvin Cycle because they are needed to convert 3 carbon dioxide molecules, into one 3-carbon sugar molecule by adding them together.

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  8. A.) In the light dependent processes light strikes chlorophyll in such a way to excite electrons to a higher energy state . In a series of reactions the energy Is converted into ATP and NADPH .
    B.) In a Calvin cycle ATP and NADPH use 3 molecules to form 3 sugar molecules.

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  9. There are two sets of reactions that take place during photosynthesis. One of them is a light-dependent reactions, where the NADHP and ATP are formed.

    In the Calvin cycle, uses ATP as an energy source and consumes NADHP to reduce power to add high energy elections to make sugar.

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  10. A. In the light dependent reaction, a water molecule is split, releasing 2 electrons (releasing also 2H+ ions). These 2 electrons are passed on from chlorophyll to chlorophyll molecules in photosystem II, excited by light energy (photons). After it has reached the photosystem centre, it is passed down an electron transport chain (ETC) to photosystem I. This ETC pumps one H+ ion into the choroplast inner membrane, and doing so creates a chemiosmosis gradient. The stored H+ is used to rotate an enzyme called ATPase which generates ATP from ADP molecules by adding a phosphate group onto the molecule. At the end of the photosystem I, the two electrons are taken in by NADP+ and a H+ to form NADPH.

    B. In the calvin cycle, ATP and NADPH and used to convert three carbon dioxide molecules into one 3-carbon sugar molecule.

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  11. When photosynthesis occurs Plants obtain light energy and convert it into chemical energy, from this NADPH and ATP are formed.

    In the Calvin cycle NADPH and ATP are used to convert carbon dioxide to carbohydrates.

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  12. 1)This process consists of several stages.The first few stages of photosynthesis states that plants take in light energy and convert it into chemical energy, forming NADPH and ATP.

    2)ATP and NADPH are used to convert 3 molecules of CO2 into one molecule of a 3-carbon sugar.

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  13. 1- The steps of photosynthesis, when light energy is converted to chemical energy is how NADPH and ATP form.

    2- In the Calvin Cycle, ATP and NADPH are used to make 3 molecules of CO2 to form sugar.

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  14. ATP and NAPDH make energy-rich carbon compounds in photosynthesis through a process of light-independent reactions.

    ATP and NADPH are utilized in the Calvin Cycle because they are needed to convert 3 carbon dioxide molecules, into one 3-carbon sugar molecule by adding them together.

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