Please help!! Pleas Explain in detail how a genetic mutation could occur to give a particular bull shark a reduced amount of testosterone and what specifically would be observed at the cellular and molecular level.

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 kinds of molecules can pass through the cell membrane without any problem?

Why were the results whit just water so much different than the trials with the detergent ?