Smooth muscle lines the walls of many of the
organs that make up the digestive system. The
smooth muscle contracts in ways to move the
food through the digestive system in a
process called peristalsis. The smooth muscle
found in the walls of the stomach and
intestines is considered which of the
following?
A. cell
B. organ
C. organism
D. tissue

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next