What the graph shows about the activity of an enzyme is, it increased and then decreased.
The interphase prepares the cell to divide by enlarging the cell so that when it does divide, there will be space for the nucleus (if it applies to the cell) and the organelles. It will allow the cell to be able to function and later divide on its own. It replicates DNA so that the two future daughter cells will have an even number of chromosomes to remain the cell type that it's parent was.
Hope this helped!
Energy input is required as it is the activation energy needed for a reaction to start.
The answer is C, hope I helped (:
Rod: night vision
Cone: day vision
