Describe trophic levels and how they can be represented in a conceptual model

Which sentence best expresses the differing opinions of these two book reviews?

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin