Final answer:
The normal activity of H+ ATPases without fusiccocin has 'No effect' on their function, as they continue to transport protons across the membrane in their standard manner.
Step-by-step explanation:
The question you've asked pertains to the normal activity of H+ ATPases in the absence of fusiccocin. H+ ATPases are enzymes that actively transport hydrogen ions (protons) across a cellular membrane, which is typically powered by the hydrolysis of ATP. In the normal state without fusiccocin, which is a toxin that acts as an activator, H+ ATPases carry out their usual function of moving protons across the membrane against the concentration gradient. Therefore, if we are questioning the effect of normal enzyme activity without any activating or inhibiting compounds such as fusiccocin, the effect can be seen as neutral or 'No effect' on the activity of these ATPases since they continue to function as they normally would.