How could the number of cells affect absorption?

Which element provides strength to the exoskeleton of clams and oysters

Someone me with this: a mineral' is determined by its actomic structure.

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.