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Photosynthesis
Bio 400
30
Biology
9th Grade
01/27/2008

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Term

I can identify and label the structures in a leaf cross section diagram.

 

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Definition

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Term
I can identify and label non cyclic electron flow diagram.
Definition
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Term
I can identify and label a cyclic electron flow diagram.
Definition
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Term
I can identify and label a Calvin cycle (light independent reactions) diagram.
Definition
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Term
I can identify and label an overall summary diagram of photosynthesis.
Definition
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Term
I can distinguish and compare the requirements and abilities of heterotrophs and autotrophs.
Definition

Heterotrophs: Heterotrophs, like this eagle, feed off of other forms of life. 

  • photoheterotroph — obtains energy from light and
  • must obtain carbon in an organic form
  • chemoheterotroph — obtains energy from the consumption of organic molecules and an organic form of carbon
  •  

     

    Autotrophs:is an organism that produces complex organic compounds from simple inorganic molecules and an external source of energy, such as light or chemical reactions of inorganic compounds.

     

    An organism that obtains carbon from organic compounds but obtains energy from light is called a photoheterotroph, while an organism that obtains carbon from organic compounds but obtains energy from the oxidation of inorganic compounds is termed a chemoheterotroph.

     

     

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    Term

     I can list the products of light reactions that are used by the Calvin cycle.

    Definition

    6 ATP + 9NADPH

    Term
     I can list the major events of the light reactions.
    Definition
    ATP synthetase, NADP+ reductase
    Term
     I can explain the role of the rubisco enzyme in the calvin cycle and photorespiration.
    Definition

    Hooks up the Carbon and RUBP

    Term
       I can define and describe the process of photorespiration.
    Definition

    Photorespiration occurs when the CO2 levels inside a leaf become low. This happens on hot dry days when a plant is forced to close its stomata to prevent excess water loss. If the plant continues to attempt to fix CO2 when its stomata are closed, the CO2 will get used up and the O2 ratio in the leaf will increase relative to CO2 concentrations.

     

     

     

    http://www2.mcdaniel.edu/Biology/botf99/photodark/photorespiration.htm

    Term
     I can explain the process of electron excitation in PSII and PS I.
    Definition
    Electrons get excited and go to the electron acceptor and then go back down the ETP
    Term
     I can describe the relationship between the Calvin cycle and the light reactions.
    Definition
    The Calvin cycle uses the ATP and NADPH from the light reactions.
    Term
     I can explain where in the chloroplast the light reactions occur.
    Definition
    On the thylakoid membrane
    Term
     I can explain where in the chloroplast the light reactions occur.
    Definition
    In the Stroma
    Term
     I can define granum.
    Definition
    A stack of thylakoids
    Term
     I can explain what happens when a molecule is reduced.
    Definition
    It gains an electron
    Term
     I can explain what happens when a molecule is oxidized.
    Definition
    It loses an electron
    Term
     I can define and describe carbon “fixation”..
    Definition
    Carbon is fixed with RUBP by Rubisco
    Term
     I can describe what happens to O2 and CO2 levels inside a leaf when stomata are closed.
    Definition
    Photorespiration occurs because the CO2 levels are lower than normal and the O2 levels get higher
    Term
    What are the reactants and products of PS1-PS2
    Definition

     reactants for PS II water + light +  and ADP 

     products for PS II: ATP + O@ 

    PS I reactants = NADP+ Jan 27, 2008 8:46:01 PM CST
     PS I products = NADPH Jan 27, 2008 8:46:12 PM CST

    Term
    How do CAM plants avoid photorespiration?
    Definition

    CAM plant avoid photorespiration by having another source of CO2 
    James Workman: --the four carbon acid that is built up at night when CAM plants keep their stomata open and they don't lose as much water

    Term
    Wavelengths?
    Definition

    if a certain wavelength is reflected, that is the color that an object appear

    Term
    What are xyloem and floem?
    Definition

     xylem transports water from roots UP to leaves 
     phloem transports carbs and other nutrients Ja

    Term

     I can list and describe the types and function of major plant tissue types.

    Definition
    Xyleom and phloem, xyleom is bigger
    Term

     I can explain how H+ (protons) exit the thylakoid and what happens as a result.

    Definition

     protons exit via ATP sythase (synthetase) and that "proton push power" causes the phosphrylation of ADP ==> AT

    Term
    Wavelengths
    Definition

    purple/blue light is in the 300 nm range 
     green/yellow in the 500 nm range 
    red/orange is in the 700 nm rang

    more energy the shorter the wavelengh 

    Term
     I can I can describe how H+ (protons) build up to high concentration levels inside the thylakoid.
    Definition

    it is activvely transported by h+ ion(proton) pumping protein 

    Term
     I can describe how the action and absorption spectrums of photosynthesis are similar.
    Definition

     plants reflect green light (that's why they look green)  light that is reflected cannot power the light reactions J
     only light that is absorbed (not reflected) can power PSII and PSi  so, whant that means, is the spectrum of light that is absorbed is extrememely similar to the spectrum of light that causes high rate of photosynthesi

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