What must be true if the mesentery is an organ? Choose the three statements that apply. A. It is part of an organ system.

B. It has a specific function in the body.

C. It is composed of different kinds of tissues.

D. It is found in every type of multicellular organism.

E. It is a group of similar cells that carry out the same function.

What is the broadest level of classification of life

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 would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase