39. Digestive System

Despite long days grazing on tall grasses, several of the cattle released into a new pasture have oddly shaped or broken legs and often lie down. These cattle might be suffering from __________.

Which part of the digestive tract is the predominant location for water and mineral absorption?

Which of the following is acquired outside of an animal's diet?

How is the stomach lining protected from the strongly acidic pH of its contents?

The tongue does all of the following except __________.

In vertebrates, food is moved along the length of the digestive system by __________.

Animals need two types of organic precursors from their food, __________, to serve as the raw materials for the synthesis of larger organic molecules.

Which of the following plays a role in both physical and chemical digestion?

What relation do indigestible plant fibers, prokaryotes, and vitamins have with the digestive system?

Which of the following nutrients are absorbed from the digestive tract directly into the blood?

Which of the following is an adaptation to a carnivorous diet?

A breakfast cereal advertises that it contains essential vitamins and minerals. In this context, the word essential means __________.

Researchers provided radioactively labeled food to a dog and traced the movement of absorbed molecules. Which type of molecule moved along a path different from all the others?

Chemical digestion of carbohydrates begins in the __________ with the action of __________.

In general, B vitamins function in your body as __________.