A virus is referred to as a particle rather than a cell because structurally it is a
a) RNA core in a carbohydrate envelope
b) nucleus surrounded by a protein coat
c) plasmid of DNA surrounded by a capsid
d) RNA or DNA core surrounded by a protein coat

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.