NOVELTY - The method comprises preparing a culture of bacteria with negative surface charge, adjusting the concentration of the cultured bacteria using deionized water and then preparing a bacterial suspension from the cultured bacteria, adding a transition metal precursor solution, which is dissolved in deionized water, to the solution obtained in the step of preparation of culture of bacteria while stirring at 20-30 degrees C for 10-15 hours to uniformly disperse the bacteria and the transition metal precursor, and refluxing a transition metal precursor solution such as sodium borohydride.    USE - The method is useful for manufacturing an organic/inorganic composite to manufacture a tube-shaped transition metal oxide rod, which is useful in an anode active material for secondary battery (all claimed), in variety of fields including nanoelectronics, photonics, catalysts, sensors and energy storage, and in various fields of industry including automobile parts, medical devices and electronic products such as laptop computers, mobile phones and musical instruments.    ADVANTAGE - The method is capable of economically, easily, simply and rapidly manufacturing the organic/inorganic composite with excellent high capacity electrochemical properties, uniform size and crystallinity, large specific area and improved electromagnetic and optical properties thus manufacturing the transition metal oxide rod with light-weight and reduced size.    DETAILED DESCRIPTION - The method comprises preparing a culture of bacteria with negative surface charge, adjusting the concentration of the cultured bacteria using deionized water and then preparing a bacterial suspension from the cultured bacteria, adding a transition metal precursor solution, which is dissolved in deionized water, to the solution obtained in the step of preparation of culture of bacteria while stirring at 20-30 degrees C for 10-15 hours to uniformly disperse the bacteria and the transition metal precursor, refluxing a transition metal precursor solution such as sodium borohydride, which is dissolved in deionized water, while adding it to the solution obtained in the adjusting step to allow the transition metal oxide to be uniformly attached on the bacterial surface, centrifuging the refluxed solution followed by washing to obtain a deposit, and drying the deposit under vacuum at 60-70 degrees C under 10-2-10-3 torr of pressure to obtain an organic/inorganic composite. The bacterial concentration measured by UV spectrometer at 600 nm has an optical density of 1.0-2.0. The concentration of the transition metal precursor is 1-100 mM. The concentration of sodium borohydride is 5-500 mM. INDEPENDENT CLAIMS are included for:    (1) an organic/inorganic composite;    (2) a method of manufacturing a tube-shaped transition metal oxide rod; and    (3) a tube-shaped transition metal oxide rod.    DESCRIPTION OF DRAWING(S) - The diagram shows a flow chart of a manufacturing process of organic-inorganic composite comprising organic bacteria and inorganic transition metal oxides.