A) the ability to phagocytose food particles
B) a slow speed of digestion
C) the presence of a digestive cavity
D) the ability to consume both large and small food items
E) None of these characteristics are common to both extra- and intracellular digestion.
G) A) and B)
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A) produce inactive lactase.
B) have a genetic polymorphism of the lactase gene that turns off lactase production after weaning.
C) must drink soy (non-dairy) formula as infants.
D) have a mutation in the promoter region of the lactase gene.
E) have mutations in regulatory regions of the lactase gene.
G) A) and D)
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A) carbohydrates
B) lipids
C) nucleic acids
D) proteins
E) bile salts
G) A) and C)
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A) Digestion is catalyzed by enzymes.
B) During digestion, nucleic acids are split into nucleotides.
C) During digestion, fats are split into monoglycerides and fatty acids.
D) Most digestion occurs in the stomach.
E) During digestion, polysaccharides and disaccharides are split into monosaccharides.
G) A) and E)
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A) They injected acid into a dog's small intestine after dissecting away all the nerves.
B) They exposed a dog's small intestine to a cell extract made from a second dog's small intestine that had been exposed to acid.
C) They cut out a piece of the small intestine and exposed it to acid.
D) They injected pancreatic secretions from a dog previously exposed to acid into the small intestine of a second dog.
E) They injected acid into the pancreas after removing all of its innervation.
G) A) and D)
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A) they cannot synthesize amino acids.
B) they do not have enough adipose tissue for vitamin A storage.
C) they cannot synthesize vitamin C.
D) they have a high incidence of fruit allergies.
E) constant seasickness and nausea on long voyages leads to weakness and anemia.
G) A) and D)
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A) 1,4,5,6,2,3,7
B) 2,1,5,4,6,3,7
C) 1,5,4,6,2,7,3
D) 2,6,5,4,1,7,3
E) 1,5,4,6,2,3,7
G) B) and C)
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A) protein, protecting the stomach lining
B) fat, solubilizing glycerol:fatty acid bonds
C) nucleic acids, uncoiling DNA strands
D) fat, emulsification
E) protein, lyophilization
G) None of the above
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A) The interior of cells is protected from hydrolytic enzymes.
B) Very large portions of food can be consumed at once and digested over a long period of hours to weeks.
C) Specialized regions of the cavity can segregate digested food from nondigested food.
D) Digestion can be regulated by hormones.
E) Vacuoles allow for direct phagocytosis by individual cells.
G) A) and E)
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