Question

If enzymes are used by all cells for all metabolic processes in different organisms, would you expect all enzymes to be efficient at the same temperature? Why or why not?

Answer 1

No; enzymes in different organisms would have to be efficient at the optimal temperature for each organism.
For example, humans have an optimal body temperature of 37 °C, but the optimal body temperature for dogs is 38.3 °C and for most birds, it's 40 °C.