|  | 
         
          | Description: 
             This diagram shows a motor 
            that is 100 times smaller than a red blood cell. The green rod is 
            DNA and the multicolor outer ring RNA. In the presence of ATP, the 
            substance that powers biological processes, the RNA spins the DNA. |   
          | Source: 
             Purdue University |   
          | Story:  RNA 
            forms nanomotor TRN March 12/19, 2003
 |   
          | TRN Categories: 
             Biotechnology; Nanotechnology |   
          | Form: 
             Still |  |