Task: Text Categorization
Input (English): Question: The phosphotransferase (PTS) system of many bacteria: 
 Options:  <0> It is commonly employed to incorporate medium sugars. <1> Participates in oxidative phosphorylation. <2> Participates in phosphorylation at the substrate level. <3> Consume directly ATP. <4> Dephosphorylates substrates as a step prior to transport.
Output (English): biology