Question

question 12 what will happen to the rate of enzyme activity if substrate is continuously added to a fixed amount of enzyme? initially decrease, then increase initially decrease, then remain constant initially increase, then remain constant initially increase, then decrease

Explanation:

In enzyme - substrate reactions, initially, as more substrate is added to a fixed amount of enzyme, there are more available active - sites for the substrate to bind to, so the rate of enzyme activity increases. However, once all the enzyme active - sites are saturated, adding more substrate will not increase the reaction rate further as the enzyme is already working at its maximum capacity.

Answer:

Initially increase, then remain constant