ras GDP ras GTP ras raf Inactive Active raf Inside of cell Refer to the figure above. A portion of a signal transduction pathway is shown in the figure. The molecule raf is a protein kinase. This molecule becomes activated when a GTP-ras complex binds to it. Which equation describes how activated raf transmits the signal in this pathway? O ATP -> CAMP +PPI O CAMP --> AMP O Inactive enzyme + ATP -> active phosphorylated enzyme + ADP O Inactive phosphorylated enzyme + ADP -> inactive enzyme + ATP O Inactive enzyme + ADP --> active phosphorylated enzyme + ATP

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