Question

in the pts group translocation mechanism, glucose is transported into the cell and modified by ______.

• oxidation to $ce{co_{2}}$ and $ce{h_{2}o}$
• the addition of a proton
• the addition of atp
• the addition of a phosphate

Explanation:

In the Phosphotransferase System (PTS) group translocation, glucose is transported into the cell and simultaneously phosphorylated (modified by the addition of a phosphate group). Oxidation to \( \text{CO}_2 \) and \( \text{H}_2\text{O} \) is complete oxidation (not part of PTS translocation modification). Adding a proton or ATP is not the modification here; phosphorylation (adding phosphate) is the key modification in PTS for glucose.

Answer:

the addition of a phosphate