RNA is hypothesized to be the
earliest form of genetic
material because it can store
information, catalyze its own
replication, and catalyze other
reactions. Which two of
these functions can DNA
not do? Which two can
proteins not do?

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.