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This activity contains 51 questions.

Question 1
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Which food items are typically part of a herbivorous diet?
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Question 2
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In which of the following ways are a wolf, a hummingbird, a termite, and a cow alike?
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Question 3
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A bulk feeder would likely _____.
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Question 4
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The first stage of food processing is _____.
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Question 5
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Which part of a chicken's digestive system grinds food with small bits of sand and gravel?
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Question 6
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In vertebrates, food is moved along the length of the digestive system by _____.
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Question 7
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Where would you find salivary amylase?
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Question 8
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The organ that allows you to taste your food is the _____.
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Question 9
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What is an important component of a bolus?
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Question 10
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A mutation in the gene for salivary (and pancreatic) amylase will greatly affect the chemical digestion of _____.
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Question 11
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The pharynx leads to two major structures, the _____.
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Question 12
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The purpose of the Heimlich maneuver is to _____.
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Question 13
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Pepsin is an enzyme produced in the stomach that attacks proteins to break them down into smaller peptide molecules. Which of the following statements is true about this enzyme?
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Question 14
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How is the stomach lining protected from the caustic acid pH of its contents?
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Question 15
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Acid chyme _____.
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Question 16
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Which of the following is a true statement regarding protein digestion?
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Question 17
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Which of the following is properly matched with its product?
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Question 18
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An open sore that appears in the stomach due to bacterial infection and to gastric juice digesting the stomach lining is called _____.
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Question 19
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The most effective anti-ulcer medication might be a chemical that _____.
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Question 20
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Which of these secretes either a digestive enzyme or a precursor to a digestive enzyme?
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Question 21
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In humans, most nutrient molecules are absorbed by the _____.
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Question 22
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The largest variety of digestive enzymes function in the _____.
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Question 23
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Gallstone surgery sometimes requires that the gallbladder be removed. Patients are then advised to avoid ingesting large amounts of fat because _____.
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Question 24
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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 similar in function to these air sacs and capillaries are the _____.
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Question 25
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Imagine that you have eaten a meal containing the following nutrients. Which would be absorbed without enzyme digestion?
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Question 26
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How does the enzyme lipase work in digestion?
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Question 27
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Which of these digestive enzymes removes one amino acid at a time from the ends of polypeptide chains?
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Question 28
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Which of the following is the actual absorptive surface within the lumen of the small intestine?
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Question 29
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The natural antacid produced to protect the intestines against stomach acid is produced in the _____.
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Question 30
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The liver and pancreas add their secretions to the partially digested food produced in the stomach, at the _____.
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Question 31
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Identify the correct statement about nutrition and digestion.
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Question 32
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Capillaries from the small and large intestine converge into the _____.
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Question 33
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Which of the following statements about the human digestive system is true?
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Question 34
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What relation do indigestible plant fibers, prokaryotes, and vitamins have with the digestive system?
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Question 35
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When the colon contracts strongly, _____.
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Question 36
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Which of the following organs of the digestive system is not involved in producing secretions that aid in digestion?
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Question 37
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Prokaryotes living in our large intestines provide us with _____.
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Question 38
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How would you expect the digestive system of a hawk (a carnivore) to compare with that of a sparrow (a seed eater)?
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Question 39
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Which of the following are considered essential nutrients?
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Question 40
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Resting energy use is measured as _____.
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Question 41
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Consider Table 21.15. Assume that you have just consumed a 12-ounce soft drink that contained 230 kilocalories. You begin to feel guilty about the excess calories and decide to go for a brisk walk to "burn" them off. You can walk a mile in 20 minutes. How long will it take you to complete your task?
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Question 42
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What is the easiest way to meet all of your essential amino acid needs?
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Question 43
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One way a vegetarian can obtain all eight essential amino acids is to _____.
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Question 44
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It is important to get some vitamin B1 every day, but it is all right if the intake of vitamin A varies a bit. Why?
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Question 45
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The fat-soluble vitamins include _____.
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Question 46
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In general, B vitamins function in your body as _____.
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Question 47
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The main reason we need some minerals and some vitamins is that they _____.
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Question 48
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_____ are needed in the diet as components of teeth and bone, normal muscle and nerve function, water balance, and parts of certain enzymes.
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Question 49
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A breakfast cereal advertises that it contains essential vitamins and minerals. In this context, the word essential means that _____.
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Question 50
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The percent daily value of a nutrient that appears on a food label is based on a diet containing _____ kilocalories per day.
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Question 51
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Let us say you have an uncle who had a heart attack and survived. He became a burden on your family. You decide you do not want this to happen to you and begin a plan to remain healthy by lowering your LDL levels and raising your HDL levels. Which of these lifestyles would be best suited to helping you achieve your goal?
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