How many chromosomes are there in the cell before it divides?

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.

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )

What element is able to combine with itself and hydrogen to form large molecules ?