QUESTIONS AND CORRECT ANSWERS
Trace the digestion of carbohydrates through the gastrointestinal tract by arranging the steps of
chemical digestion of a piece of bread beginning when you take your first bite. - Correct
answers✔✔Salivary amylase breaks down amylose and amylopectin in the bread into smaller
chains.
Step 2
Carbohydrate-digesting enzymes are inactivated by hydrochloric acid.
Step 3
Pancreatic amylase breaks down amylose and amylopectin into the disaccharide maltose.
Step 4
Dissacharides are digested by the brush border enzymes sucrase, maltase, and lactase to yield
monosaccharides.
Step 5
Dietary fiber from the bread passes into the large intestine to be eliminated.
The alpha bonds of carbohydrates are broken down during digestion by specific enzymes.
Lactose contains a beta bond, which is digestible by lactase. Most carbohydrates that contain
beta-glycosidic bonds are not digestible because humans lack the enzyme needed to break down
the bond. Which of the following carbohydrates contain alpha bonds that are digestible by
humans? - Correct answers✔✔amylose and amylopectin
Which of the following statements correctly describes the process of carbohydrate absorption? -
Correct answers✔✔Glucose and galactose are absorbed into the enterocyte by active transport
before they enter the capillaries for transport through the bloodstream.
Which of the following statements best describes the role of dietary fiber in reducing the risk of
developing diseases? - Correct answers✔✔Soluble fibers slow the digestion and release of
, glucose preventing a spike in blood glucose following a meal. This increase in transit time may
improve long-term control of diabetes.
How is digestion altered in individuals who have been diagnosed with lactose intolerance? -
Correct answers✔✔Undigested lactose draws water into the gastrointestinal tract, causing
diarrhea and cramping.
How many total kilocalories are in Ella's sandwich? - Correct answers✔✔544
How many total grams of carbohydrate are in Ella's sandwich? How many grams of fiber? How
many grams of total and added sugars? When you are asked to provide a set of two or more
numeric answers, separate them with commas. Round your answer to the nearest whole number.
- Correct answers✔✔Total Carbohydrates, Dietary Fiber, Total Sugars, Added Sugars: 48, 4, 8, 4
g
What is the percentage of kilocalories from carbohydrates in Ella's sandwich? Round your
answer to the nearest whole percent (for example, 12 - Correct answers✔✔35%
Does Ella's sandwich meet the AMDR recommendation for carbohydrate? - Correct
answers✔✔No
Ella understands that the AMDR is meant to assess a day's worth of food intake and not just one
item, such as a sandwich, but she frequently makes this sandwich for lunch and wants to
determine what she could do to make this lunch more closely meet the AMDR for carbohydrate
and the Dietary Guidelines for Americans related to carbohydrates.Which of the following would
be the best change to bring Ella's lunch in line with the AMDR and the Dietary Guidelines for
Americans for carbohydrates? - Correct answers✔✔adding an apple to her meal
Ella remembers that the dietitian encouraged her to select whole grains, so she decides to change
the bread in her sandwich from white to wheat. Compare the Nutrition Facts panels for Ella's
white-bread and whole-grain sandwiches in the Build A Sandwich NutriTool. Which of the