VMMC VMMC Medical Solved Paper-2007

  • question_answer
    Source of energy in an ecosystem is

    A) Sun                       

    B)        ATP                       

    C)        sugar made by plant      

    D) green plant

    Correct Answer: A

    Solution :

    In an ecosystem the Sun is source of energy. The green plants used the solar energy in the process of photosynthesis and produce carbohydrates (sugar) ie, the solar energy is converted into chemical energy. The carbohydrates are oxidized in mitochondria and by the process of phosphorylation produces ATP. ATP is the energy currency of the cell. The ATP has two high energy phosphate bond. These ATP are used for the various activity of organisms.


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