FNDH 400 FINAL EXAM UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
Question:
1. T/F: Compared to amylopectin, amylose is branched and contains alpha-1-6 bonds at its branch points.
Answer:
False. Compared to amylose, amylopectin is branched and contains alpha-1-6 bonds at its branch points.
Question:
2. T/F: Compared to amylopectin, an oligosaccharide is longer and contains less prevalent alpha 1-6 bonds.
Answer:
False. Compared to amylopectin, an oligosaccharide is shorter and contains more prevalent alpha 1-6
bonds.
Question:
3. T/F: Compared to amylopectin, glycogen is more branched, and is found in animals.
Answer:
True.
Question:
4. T/F: Trans fatty acids have lower melting points than cis-bond containing fatty acids, meaning trans
fatty acids are more likely to be liquid at room temperature.
Answer:
False. Trans fatty acids have higher melting points than cis-bond containing fatty acids, meaning trans fatty
acids are more likely to be solid at room temperature.
Question:
5. T/F: In individuals with PKU, since proline cannot be converted to tryptophan because of the mutation
in proline hydroxylase, tryptophan is nonessential in these individuals.
Answer:
False. In individuals with PKU, since phenylalanine cannot be converted to tyrosine because of the
mutation in phenylalanine hydroxylase, tyrosine is conditionally essential in these individuals.
Question:
6. T/F: Individuals with PKU need to consume a high protein diet and avoid consuming the amino acid
advantame, because it can be broken down to the amino acid proline.
Answer:
False. Individuals with PKU need to consume a low protein diet and avoid consuming the alternative
sweetener aspartame, because it can be broken down to the amino acid phenylalanine.
Question:
7. T/F: A product that contains inulin (oligofructose) and bifidobacterium could be considered a synbiotic.
Answer:
True.
, Question:
8. T/F: In the stomach, the hormone glucagon stimulates the release of gastric amylase and gastric
protease, which are the active digestive enzymes that digest proteins and carbohydrates, respectively.
Answer:
False. False. In the stomach, the hormone gastrin stimulates the release of gastric lipase and pepsinogen
(activated to pepsin), which are the active digestive enzymes that digest triglycerides and proteins,
respectively.
Question:
9. T/F: Since high-fructose corn syrup contains free fructose, it will result in more fructose being available
for uptake and absorption than sucrose.
Answer:
False. Since high-fructose corn syrup contains free fructose, it will result in the same amount of fructose
being available for uptake and absorption as sucrose.
Question:
10. T/F: Wheat's limiting amino acids are lysine and threonine and almond's limiting amino acid is lysine;
thus, since they have similar limiting amino acids, they are complementary proteins.
Answer:
False. Rice's limiting amino acids are lysine and threonine and walnut's limiting amino acid is lysine; thus,
since they have similar limiting amino acids, they are not complementary proteins.
Question:
11. T/F: Heartburn is a result of a leaky pyloric sphincter, which allows gastric fluid to reflux into the
trachea.
Answer:
False. Heartburn is a result of a leaky lower esophageal sphincter, which allows gastric fluid to reflux into
the esophagus.
Question:
12. T/F: Marasmus is a protein-energy malnutrition condition that results from sufficient calories, but
inadequate protein. A notable feature is a rotund belly.
Answer:
False. Kwashiorkor is a protein-energy malnutrition condition that results from sufficient calories, but
inadequate protein. A notable feature is a rotund belly.
Question:
13. T/F: Fermentable, viscous fiber, since it is readily excreted in feces, increases stool bulk and transit
time thus decreasing constipation and colon cancer risk.
Answer:
False. Nonfermentable, nonviscous fiber, since it is readily excreted in feces, increases stool bulk and
decreasing transit time thus decreasing constipation and colon cancer risk.
Question:
14. T/F: Sorbitol (a sugar alcohol), is a poor option for use in products like chewing gum because it is
readily fermented by bacteria in the mouth, decreasing acid production, and thus reducing cavities.
AND CORRECT ANSWERS
Question:
1. T/F: Compared to amylopectin, amylose is branched and contains alpha-1-6 bonds at its branch points.
Answer:
False. Compared to amylose, amylopectin is branched and contains alpha-1-6 bonds at its branch points.
Question:
2. T/F: Compared to amylopectin, an oligosaccharide is longer and contains less prevalent alpha 1-6 bonds.
Answer:
False. Compared to amylopectin, an oligosaccharide is shorter and contains more prevalent alpha 1-6
bonds.
Question:
3. T/F: Compared to amylopectin, glycogen is more branched, and is found in animals.
Answer:
True.
Question:
4. T/F: Trans fatty acids have lower melting points than cis-bond containing fatty acids, meaning trans
fatty acids are more likely to be liquid at room temperature.
Answer:
False. Trans fatty acids have higher melting points than cis-bond containing fatty acids, meaning trans fatty
acids are more likely to be solid at room temperature.
Question:
5. T/F: In individuals with PKU, since proline cannot be converted to tryptophan because of the mutation
in proline hydroxylase, tryptophan is nonessential in these individuals.
Answer:
False. In individuals with PKU, since phenylalanine cannot be converted to tyrosine because of the
mutation in phenylalanine hydroxylase, tyrosine is conditionally essential in these individuals.
Question:
6. T/F: Individuals with PKU need to consume a high protein diet and avoid consuming the amino acid
advantame, because it can be broken down to the amino acid proline.
Answer:
False. Individuals with PKU need to consume a low protein diet and avoid consuming the alternative
sweetener aspartame, because it can be broken down to the amino acid phenylalanine.
Question:
7. T/F: A product that contains inulin (oligofructose) and bifidobacterium could be considered a synbiotic.
Answer:
True.
, Question:
8. T/F: In the stomach, the hormone glucagon stimulates the release of gastric amylase and gastric
protease, which are the active digestive enzymes that digest proteins and carbohydrates, respectively.
Answer:
False. False. In the stomach, the hormone gastrin stimulates the release of gastric lipase and pepsinogen
(activated to pepsin), which are the active digestive enzymes that digest triglycerides and proteins,
respectively.
Question:
9. T/F: Since high-fructose corn syrup contains free fructose, it will result in more fructose being available
for uptake and absorption than sucrose.
Answer:
False. Since high-fructose corn syrup contains free fructose, it will result in the same amount of fructose
being available for uptake and absorption as sucrose.
Question:
10. T/F: Wheat's limiting amino acids are lysine and threonine and almond's limiting amino acid is lysine;
thus, since they have similar limiting amino acids, they are complementary proteins.
Answer:
False. Rice's limiting amino acids are lysine and threonine and walnut's limiting amino acid is lysine; thus,
since they have similar limiting amino acids, they are not complementary proteins.
Question:
11. T/F: Heartburn is a result of a leaky pyloric sphincter, which allows gastric fluid to reflux into the
trachea.
Answer:
False. Heartburn is a result of a leaky lower esophageal sphincter, which allows gastric fluid to reflux into
the esophagus.
Question:
12. T/F: Marasmus is a protein-energy malnutrition condition that results from sufficient calories, but
inadequate protein. A notable feature is a rotund belly.
Answer:
False. Kwashiorkor is a protein-energy malnutrition condition that results from sufficient calories, but
inadequate protein. A notable feature is a rotund belly.
Question:
13. T/F: Fermentable, viscous fiber, since it is readily excreted in feces, increases stool bulk and transit
time thus decreasing constipation and colon cancer risk.
Answer:
False. Nonfermentable, nonviscous fiber, since it is readily excreted in feces, increases stool bulk and
decreasing transit time thus decreasing constipation and colon cancer risk.
Question:
14. T/F: Sorbitol (a sugar alcohol), is a poor option for use in products like chewing gum because it is
readily fermented by bacteria in the mouth, decreasing acid production, and thus reducing cavities.
