Testing that is performed on maternal urine and/or blood to determine the presence of the hormone hcg (human chorionic gonadotropin), is a test performed to confirm

What is mitosis and how does it affect change

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.

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided