Smooth muscles of the digestive system move food by the process of peristalsis.
a. true
b. false

A. True

Explanation: "Peristalsis. Peristalsis is a series of muscular contractions that propel food through the small intestine. These kinds of controls help you get the most nutrients out of your food. ... This coordinated contraction of smooth muscle keeps food moving on its one-way path through your digestive system."

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.