The image (Figure 1) shows a hypothetical enzymatic pathway with four enzymes, labeled E1, E2, E3, and E4. The enzymes make products, labeled P0, P1, P2, P3, and P4.
Which of the following statements is most likely to be true in the case of the feedback-regulated enzymatic pathway shown?
a. P0 binds E4 and activates it.
b. P2 binds E2 and activates it.
c. P4 binds E1 and deactivates it.
d. P3 binds E2 and activates it
e. P4 binds E3 and deactivates it.