Question 1

An enzyme with high activity in an acidic environment is

Accepted Answer

A)   amylase.
B)   pepsin.
C)   gastrin.
D)   trypsin.
E)   sucrose.F) A) and C)
G) A) and D)

Question 2

Which of the following organs is incorrectly paired with its function?

Accepted Answer

A)   stomach-protein digestion
B)   oral cavity-starch digestion
C)   large intestine-bile production
D)   small intestine-nutrient absorption
E)   pancreas-enzyme productionF) B) and D)
G) B) and C)

Question 3

A group of animals among which a relatively long cecum is likely to be found is the

Accepted Answer

A)   carnivores.
B)   herbivores.
C)   autotrophs.
D)   heterotrophs.
E)   omnivores.F) A) and B)
G) B) and D)

Question 4

Use the following information to answer the question below.
Mouse mutations can affect an animal's appetite and eating habits. The ob gene codes for a satiety factor, the hormone leptin. The db gene product, the leptin receptor, is required to respond to the satiety factor.
-Imagine that you are a biologist who is attempting to get an accurate measure of an animal's basal metabolic rate. The best time to measure the metabolic rate is when the animal

Accepted Answer

A)   is resting and has not eaten its first meal of the day.
B)   is resting and has just completed its first meal of the day.
C)   has recently eaten a sugar-free meal.
D)   has not consumed any water for at least 48 hours.
E)   has just completed 30 minutes of vigorous exercise.F) A) and E)
G) D) and E)

Question 5

When the beta cells of the pancreas release insulin into the blood,

Accepted Answer

A)   the blood glucose levels rise to a set point and stimulate glucagon release.
B)   the skeletal muscles and the adipose cells take up glucose at a faster rate.
C)   the liver catabolizes glycogen.
D)   the alpha cells of the pancreas release glucose into the blood.
E)   the kidneys begin gluconeogenesis.F) A) and D)
G) A) and C)

Question 6

Cattle are able to survive on a diet consisting almost entirely of plant material because

Accepted Answer

A)   they are autotrophic.
B)   cattle, like rabbits, re-ingest their feces.
C)   they manufacture all 15 amino acids out of sugars in the liver.
D)   cattle saliva has enzymes capable of digesting cellulose.
E)   they have cellulose-digesting, symbiotic microorganisms in chambers of their stomachs.F) D) and E)
G) A) and B)

Question 7

The large surface area in the gut directly facilitates

Accepted Answer

A)   secretion.
B)   absorption.
C)   elimination.
D)   filtration
E)   temperature regulation.F) A) and E)
G) C) and D)

Question 8

A general rule relating the capacity of a specific animal's digestive system to provide adequate access to substrates for biosynthesis of cellular components, as well as fuel molecules needed for ATP production, is that the animal should have access to

Accepted Answer

A)   a high-protein, low-carbohydrate diet.
B)   a diet low in lipids and high in protein.
C)   a low-calorie diet with a large intake of fluids, especially water.
D)   a diet that matches the "food pyramid" for the species.
E)   a diet that maximizes vitamins and minerals.F) A) and B)
G) C) and E)

Question 9

The absorption of fats differs from that of carbohydrates in that the

Accepted Answer

A)   processing of fats does not require any digestive enzymes, whereas the processing of carbohydrates does.
B)   fat absorption occurs in the stomach, whereas carbohydrates are absorbed from the small intestine.
C)   carbohydrates need to be emulsified before they can be digested, whereas fats do not.
D)   most absorbed fat first enters the lymphatic system, whereas carbohydrates directly enter the blood.
E)   fats, but not carbohydrates, are digested by bacteria before absorption.F) D) and E)
G) B) and C)

Question 10

Animals that migrate great distances would obtain the greatest energetic benefit of storing chemical energy as

Accepted Answer

A)   proteins.
B)   minerals.
C)   carbohydrates.
D)   amino acids.
E)   fats.F) A) and C)
G) A) and B)

Question 11

An advantage of a complete digestive system over a gastrovascular cavity is that the complete system

Accepted Answer

A)   excludes the need for extracellular digestion.
B)   allows for specialized regions with specialized functions.
C)   allows digestive enzymes to be more specific.
D)   allows extensive branching.
E)   facilitates intracellular digestion.F) B) and E)
G) A) and E)

Question 12

Certain nutrients are considered "essential" in the diets of some animals because

Accepted Answer

A)   only those animals use those nutrients.
B)   the nutrients are subunits of important polymers.
C)   these animals are not able to synthesize these nutrients.
D)   the nutrients are necessary coenzymes.
E)   only certain foods contain them.F) C) and E)
G) A) and C)

Question 13

Pepsin is a digestive enzyme that

Accepted Answer

A)   is manufactured by the pancreas.
B)   helps stabilize fat-water emulsions.
C)   splits maltose into monosaccharides.
D)   begins the hydrolysis of proteins in the stomach.
E)   is denatured and rendered inactive in solutions with low pH.F) A) and B)
G) A) and C)

Question 14

Figure 33.2
-Examine the digestive system structures in the figure above. The agents that help emulsify fats are produced in location

Accepted Answer

A)   1.
B)   2.
C)   3.
D)   8.
E)   9.F) B) and D)
G) All of the above

Question 15

Earthworms, grasshoppers, and birds all have a

Accepted Answer

A)   gastric cecae.
B)   larynx.
C)   crop.
D)   pharynx.
E)   epiglottis.F) B) and C)
G) C) and E)

Question 16

Coprophagy, the nutrition-boosting ingestion of fecal material, is important for the nutritional balance of

Accepted Answer

A)   ruminants such as cows.
B)   insects and arthropods.
C)   rabbits and their relatives.
D)   squirrels and some rodents.
E)   very large animals, such as elephants.F) C) and D)
G) None of the above

Question 17

Upon activation by stomach acidity, the secretions of the parietal cells

Accepted Answer

A)   initiate the digestion of protein in the stomach.
B)   initiate the mechanical digestion of lipids in the stomach.
C)   initiate the chemical digestion of lipids in the stomach.
D)   include pepsinogen.
E)   delay digestion until the food arrives in the small intestine.F) None of the above
G) C) and D)

Question 18

Digestive secretions with a pH of 2 are characteristic of the

Accepted Answer

A)   small intestine.
B)   stomach.
C)   pancreas.
D)   liver.
E)   mouth.F) A) and C)
G) A) and D)

Question 19

The bile salts

Accepted Answer

A)   are enzymes.
B)   are manufactured by the pancreas.
C)   emulsify fats in the duodenum.
D)   increase the efficiency of pepsin action.
E)   are normally an ingredient of gastric juice.F) A) and B)
G) A) and C)

Question 20

Which pair correctly associates a physiological process with the appropriate vitamin?

Accepted Answer

A)   blood clotting and vitamin C
B)   normal vision and vitamin A
C)   synthesis of cell membranes and vitamin D
D)   protection of skin from cancer and vitamin E
E)   production of white blood cells and vitamin KF) D) and E)
G) B) and D)

Exam 33: Animal Nutrition

Digestive secretions with a pH of 2 are characteristic of the

Correct Answer
verified

Earthworms, grasshoppers, and birds all have a

Correct Answer
verified

The absorption of fats differs from that of carbohydrates in that the

Correct Answer
verified

Which of the following organs is incorrectly paired with its function?

Correct Answer
verified

An enzyme with high activity in an acidic environment is

Correct Answer
verified

A group of animals among which a relatively long cecum is likely to be found is the

Correct Answer
verified

Certain nutrients are considered "essential" in the diets of some animals because

Correct Answer
verified

Figure 33.2 -Examine the digestive system structures in the figure above. The agents that help emulsify fats are produced in location

Correct Answer
verified

A general rule relating the capacity of a specific animal's digestive system to provide adequate access to substrates for biosynthesis of cellular components, as well as fuel molecules needed for ATP production, is that the animal should have access to

Correct Answer
verified

Pepsin is a digestive enzyme that

Correct Answer
verified

Coprophagy, the nutrition-boosting ingestion of fecal material, is important for the nutritional balance of

Correct Answer
verified

Correct Answer
verified

The large surface area in the gut directly facilitates

Correct Answer
verified

When the beta cells of the pancreas release insulin into the blood,

Correct Answer
verified

The bile salts

Correct Answer
verified

Animals that migrate great distances would obtain the greatest energetic benefit of storing chemical energy as

Correct Answer
verified

Which pair correctly associates a physiological process with the appropriate vitamin?

Correct Answer
verified

Upon activation by stomach acidity, the secretions of the parietal cells

Correct Answer
verified

An advantage of a complete digestive system over a gastrovascular cavity is that the complete system

Correct Answer
verified

Cattle are able to survive on a diet consisting almost entirely of plant material because

Correct Answer
verified

Exam 33: Animal Nutrition

Digestive secretions with a pH of 2 are characteristic of the

Correct AnswerverifiedShow Answer

Earthworms, grasshoppers, and birds all have a

Correct AnswerverifiedShow Answer

The absorption of fats differs from that of carbohydrates in that the

Correct AnswerverifiedShow Answer

Which of the following organs is incorrectly paired with its function?

Correct AnswerverifiedShow Answer

An enzyme with high activity in an acidic environment is

Correct AnswerverifiedShow Answer

A group of animals among which a relatively long cecum is likely to be found is the

Correct AnswerverifiedShow Answer

Certain nutrients are considered "essential" in the diets of some animals because

Correct AnswerverifiedShow Answer

Figure 33.2 -Examine the digestive system structures in the figure above. The agents that help emulsify fats are produced in location

Correct AnswerverifiedShow Answer

A general rule relating the capacity of a specific animal's digestive system to provide adequate access to substrates for biosynthesis of cellular components, as well as fuel molecules needed for ATP production, is that the animal should have access to

Correct AnswerverifiedShow Answer

Pepsin is a digestive enzyme that

Correct AnswerverifiedShow Answer

Coprophagy, the nutrition-boosting ingestion of fecal material, is important for the nutritional balance of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The large surface area in the gut directly facilitates

Correct AnswerverifiedShow Answer

When the beta cells of the pancreas release insulin into the blood,

Correct AnswerverifiedShow Answer

The bile salts

Correct AnswerverifiedShow Answer

Animals that migrate great distances would obtain the greatest energetic benefit of storing chemical energy as

Correct AnswerverifiedShow Answer

Which pair correctly associates a physiological process with the appropriate vitamin?

Correct AnswerverifiedShow Answer

Upon activation by stomach acidity, the secretions of the parietal cells

Correct AnswerverifiedShow Answer

An advantage of a complete digestive system over a gastrovascular cavity is that the complete system

Correct AnswerverifiedShow Answer

Cattle are able to survive on a diet consisting almost entirely of plant material because

Correct AnswerverifiedShow Answer

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