Why is coral found near the surface of the water?

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.

What is the next step in muscle contraction after the actin changes shape? (apex)

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?