Exam 32: Digestion and Nutrition

An egg-eating snake carefully retracts its teeth and engulfs a bird egg whole.Once it has completely closed its mouth,it can then break the eggshell internally and let the liquid contents move down the digestive tract.To avoid having the sharp pieces of eggshell proceed to the stomach,it must regurgitate them before they pass the

The earthworm increases the surface area of its intestine by this dorsal fold called a _____________.

The evolution of an alimentary system is primarily to allow

Nearly all animals are ________ organisms that depend on already synthesized organic compounds.

Salivary amylase would begin the digestion of

Describe the unique pathway for the digestion of fat molecules and indicate why they are not completely broken down, as are other food molecules.