Turbulent blood flow caused by a narrowed or malfunctioning valve is called a Turbulent blood flow caused by a narrowed or malfunctioning valve is called a , which can be heard during auscultation of the heart. , which can be heard during auscultation of the heart.

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.

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

What are the proteins in connectivity tissues of your foot examples of?