161.  Which of the following does NOT illustrate digestion?  
A.  polysaccharides ? disaccharides
B.  fat ? fatty acids and glycerol
C.  CO₂ and H₂O?carbohydrates
D.  protein ? amino acids
E.  disaccharides ? monosaccharides

162.  Enzymes for the digestion of disaccharides are produced in the  
A.  mouth.
B.  stomach.
C.  pancreas.
D.  small intestine.
E.  liver.

163.  Insulin increases the rate of _____ transport into cells.  
A.  sucrose
B.  fructose
C.  glucose
D.  galactose
E.  lactose

164.  Most nutrient absorption occurs in the  
A.  stomach and esophagus.
B.  duodenum and jejunum.
C.  ascending colon and cecum.
D.  pancreatic duct and gall bladder.
E.  ileum and transverse colon.

165.  Enzymes that digest carbohydrates include  
A.  peptidases.
B.  amylase, maltase, and sucrase.
C.  lipase.
D.  maltase and lipase.
E.  trypsin and chymotrypsin.

166.  Monosaccharides  
A.  are emulsified before absorption.
B.  are absorbed into lacteals.
C.  use a symport process in their absorption.
D.  need vitamin C to be absorbed.
E.  can not be absorbed.

167.  If the thoracic duct were tied off, which of the following classes of nutrients would not enter the circulatory system at their normal rate?  
A.  amino acids
B.  glucose
C.  lipids
D.  disaccharides
E.  monosaccharides

168.  Emulsification  
A.  converts small lipid droplets into larger droplets.
B.  occurs in the gallbladder.
C.  chemically digests lipids.
D.  increases surface area for lipid digestion.
E.  involves enzymes.

169.  Small droplets of digested lipids surrounded by bile salts are called  
A.  chylomicrons.
B.  micelles.
C.  monoglycerides.
D.  diglycerides.
E.  lacteals.

170.  Chylomicrons  
A.  are synthesized in intestinal epithelial cells.
B.  enter capillaries in the small intestine.
C.  help emulsify fats.
D.  are a rich source of carbohydrate.
E.  are synthesized in the lumen of the small intestines.