17) The steady state Carbon Cycle is largely determined by the interplay between

Question

17) The steady state Carbon Cycle is largely determined by the interplay between whie h two processes: a. The burning of fossil fuels and photosynthesis b. Erosion and photosynthesis c. Fossilization and respiration d. Photosynthesis and respiration e. Oxygenic and anoxygenic photosynthesis The expression of bacterial nanowires would be expected to increase under which of the following conditions? 18) a. Excess electron-donor b. Limited electron-acceptor c. Excess electron-acceptor d. Limited electron-donor e. Increased temperature Microbes scavenge Iron (Fe) from their environment via the production of which of the following molecules: 19) a. Siderophores b. Cytochromes c. Heterocysts d. Biosurfactants e. Carotenoids 20) Photolithoautotrophs get their energy, electrons, and carbon from which of the following: a. Organic compounds/inorganic compounds/organic compounds b. Light/organic compounds/organic compounds c. Light/inorganic compounds/CO2 d. Reduced organic compounds/organic compounds/CO2 e. None of the above 21) Which of the following best describes aerobic respiration on glucose? a. O2 is the electron donor and glucose in the electron acceptor b. Nitrate is the electron acceptor and glucose is the electron donor c. O2 is the electron acceptor and glucose is the electron donor d. Glucose gets reduced while O2 is oxidized e. CO2 gets reduced

Explanation / Answer

Ans 17 :d) Photosynthesis and respiration

Photosynthesis is the process by which green plants take up atmospheric carbon dioxide to prepare their own food whereas in respiration the carbon fuel (glucose) in the body is oxidised to produced carbon dioxide which is released into the atmosphere.

So both of these processes can be considered as opposite/reverse of each other , so they maintain a steady state carbon cycle in the nature.

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