How do enzymes maximize the energy harvested from the oxidation of food molecules?

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.

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

Most of the carbon on earth is stored in the form of