Enzymes of the energy metabolism need to have an optimal pH to function. For example, this pH can change from 7.0 to <6.5. What does this mean? p...

Enzymes of the energy metabolism need to have an optimal pH to function. For example, this pH can change from 7.0 to <6.5. What does this mean?


pH was acidic and became more acidic.
pH was neutral and remained neutral.
pH was neutral and became acidic.
pH was basic and became acidic.
None of the options.