Light and dark reactions photosynthesis

    • What are the differences between light and dark reactions?

      The main difference between light and dark reaction is that light reaction is the first stage of photosynthesis, which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis, which produces glucose by using the energy form ATP and NADPH produced from the light reaction.

    • What are the steps of light dependent reactions in photosynthesis?

      Photosynthesis is a photo-chemical reaction involving 2 main steps, i.e. Light reaction or Hill’s reaction and Dark reaction or Blackmann’s reaction. Light reaction occurs in presence of light. Dark reaction can occur in absence of light but is dependent upon the end product of light reaction.

    • What is light reaction and dark reaction?

      Light reaction and dark reaction are the two types of sequential processes that occur during the photosynthesis of plants. Light reaction occurs in the thylakoid membrane of chloroplast whereas the dark reaction occurs in the stroma of the chloroplast.

    • [PDF File]Photosynthesis: Light Reactions - WOU

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      Photosynthesis: Light Reactions Cyanobacteria • Overview • Structure of chloroplast • Absorption of Light • Photosystems • Electron transport chain • Photophosphorylation • Electron flow water to oxygen • …

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    • [PDF File]CHAPTER 13 PHOTOSYNTHESIS H P

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      turn forms starch. The former set of reactions, since they are directly light driven are called light reactions (photochemical reactions). The latter are not directly light driven but are dependent on the products of light reactions (ATP and NADPH). Hence, to distinguish the latter they are called, by convention, as dark r eactions (carbon r ...

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    • [PDF File]Light Reactions ofPhotosynthesis

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      bya "dark"electron-transport chain towhich is coupled aphosphorylation site. Early concepts Thefirst hypothesis abouttherole of light in photosynthesis came very appropriately from Jan Ingenhousz, who some years earlier had madethe epochal discovery that it …

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    • [PDF File]Chapter 5 Photosynthesis

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      Light energy is transduced into chemical energy at the thylakoid membrane. Fixation of CO2 takes place in the stroma. complexes of bacteria are located in special membrane regions. Photosynthesis can be divided in two types of reactions, the light reactions and the dark reactions. In the light reactions, light energy is used to excite a cofactor.

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    • [PDF File]11. PHOTOSYNTHETIC PATHWAYS - C , C AND CAM …

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      of photosynthesis occurring independent of light is called dark reaction. It takes place in the stroma of chloroplast. The dark reaction is purely enzymatic and it is slower than the light reaction. The dark reactions occur also in the presence of light. In dark reaction, the …

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    • [PDF File]Light and Dark - BANR

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      the light and dark reactions of photosynthesis and aerobic and anaerobic cellular respiration. Administering the Probe !is probe is appropriate for middle and high school students who have prior knowledge of the general processes of photosynthesis and res …

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    • [PDF File]Photosynthesis Chloroplasts Light Reactions Dark Reactions ...

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      Light Reactions Absorption of light Plank's law: E =hν= hc λ h = Plank's constant =6.626 x 10-34 J.s c = speed of light = 2.998 x 108 m.s-1 (vacuum) λ = wavelength Molecules absorb photons whose energy match the energy difference between ground and excited states Beer-Lambert law: A =log I0 I =εcl A = absorbance I0 and I = incident and ...

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    • [PDF File]Chapter 7: PHOTOSYNTHESIS

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      “Dark” Reactions Don’t memorize this!! Involves an anabolic pathway known as the Calvin cycle: • endergonic reactions of this pathway are fueled by ATP & NADPH from the “light” reactions • resulting sugars can be used as a source of energy or to build other organic molecules Calvin cycle

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    • [DOC File]ANSWERS 1 (68 Marks)

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      State that photosynthesis consists of light-dependent and light-independent reactions (these should NOT be called ‘light’ and ‘dark’ reactions). Explain the light-dependent reactions. (include the photoactivation of photosystem II, photolysis of water, electron transport, cyclic and non-cyclic photophosphorylation, photoactivation of ...

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    • [DOC File]Chapter 8: Photosynthesis

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      The purpose of the light reaction is to produce the high-energy compounds of ATP and NADPH which will be used in the light independent reactions. X. The Calvin Cycle. A. This set of reactions may be called by several names: The Calvin Cycle, the Dark Reaction, or the Light Independent Reactions. B. This occurs in the stroma of the chloroplast. C.

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    • [DOC File]Photosynthesis Webquest - b-g.k12.ky.us

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      Write a script for a tour guide leading trips to the light and dark reactions. Create an advertising campaign to promote your trip. Write a persuasive essay on the importance of photosynthesis. Task 1: Create a map of the structure of the chloroplast. Visit the following sites to learn about the form and function of the chloroplast.

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    • [DOC File]Photosynthesis - The Light Reactions

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      Remember, there are two types of reactions in photosynthesis. 1. The Light Reactions ("photo") - produce ATP and NADPH so the "Dark Reactions" can occur - need light - occur in the thylakoid membrane of chloroplast. 2. The Dark Reactions ("synthesis") - ATP and NADPH produced in Light Reactions are used to produce carbohydrate from CO2

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    • [DOC File]Photosynthesis - DOC

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      In the light reactions then, electrons flow in a continuous circuit from water to NADPH. The second series of reactions in photosynthesis are known as the dark reactions. In the dark reactions, the high-energy molecules ATP and NADPH are used to fuel the production of glucose. These reactions are commonly referred to as the Calvin Cycle.

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    • [DOC File]Standard Biology Photosynthesis & Respiration Unit Test

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      Light energy( Goes into light reactions. Glucose ( comes out of the dark reactions. oxygen gas -> comes out of light reactions. carbon dioxide ( goes into dark reactions. water( goes into light reactions. Short Answers. Choose 2. 1. Two stages of aerobic respiration take place in the mitochondria.

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    • [DOC File]PHOTOSYNTHESIS NOTES

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      The following points describe the significance and relationship of photosynthesis to life on earth. Photosynthesis begins the carbon cycle by fixing CO2 (carbon dioxide in the atmosphere) It has 2 major metabolic components: the light reactions and the "dark" reactions . The overall equation for photosynthesis is:

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    • [DOC File]AP BIOLOGY OUTLINE FOR PHOTOSYNTHESIS:

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      The process of photosynthesis consists of two phases, the light reactions . and the dark reactions. Discuss each of these groups of reactions and their interrelationships. 1974: The overall equation for aerobic respiration is usually written as the reverse . of the overall equation for photosynthesis. What features of the biochemical

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    • [DOC File]Photosynthetic Photography (Light & Photosynthesis)

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      As pointed out above, in the light dependent reactions of photosynthesis, photon energy is absorbed by pigment molecules and transferred to a reactive chlorophyll a molecule. In order to illustrate light as a reactant for photosynthesis, you will use geranium leaves that have been kept in the dark for two days prior to the lab (in order to ...

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