39. Digestive System

Which of the following might make the most effective anti-ulcer medication?

Pepsin is an enzyme produced in the stomach that attacks proteins to break them down into smaller peptide molecules. Which of the following statements about this enzyme is true?

Which of the following are considered essential nutrients: (1) certain carbohydrates, (2) certain fatty acids, (3) certain amino acids, and/or (4) cholesterol?

Most digestive enzymes function in the __________.

Which of the following statements about nutrition and digestion is true?

The fat-soluble vitamins include __________.

Which of the following processes, structures, or conditions are properly matched?

How would you expect the digestive system of a hawk to compare with that of a seed-eating sparrow?

The lungs consist of many small air sacs and blood vessels, which greatly increase surface area and improve the transfer of substances through their walls. The structures in the digestive system most similar in function to these air sacs and capillaries are the __________.

The natural antacid that protects the intestines against stomach acid is produced by the __________.

Symbiotic bacteria living in our large intestines provide us with __________.

Which of the following animals has a gastrovascular cavity with a single opening?

Which of the following statements regarding protein digestion is true?

__________ are needed in the diet as components of teeth and bone, as parts of certain enzymes, for normal muscle and nerve function, and for water balance.

Which food items are typical of an herbivorous diet?