Which best describes the top and bottom images of muscle contraction? the top image is more relaxed than the bottom image. the top image has greater actin-myosin interactions than the bottom image. the bottom image is more relaxed than the top image. the bottom image has fewer overlaps than the top image.

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.

The pelican's beak is adapted for in .

Which three statements represent the benefits of performing experiments using computer simulations?