In a experiment to study the breakdown of protein, a student uses the enzyme amylase and an indicator what could be a reason why there is no change in color ?

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.

Ithink its because more have died recently than in the past.