DIT 121 Study guide CHAPTERS 1-4 100% Correct Verified 2024 Version
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DIT 121 Study guide CHAPTERS 1-4 |
100% Correct | Verified | 2024 Version
1. Name the six classes of nutrients -
1. Carbohydrate
2.Protein.
3.Fats
4.Vitamin
5.Mineral
6.Water
2. What is an essential nutrient? Explain why alcohol is not considered a nutrient. - Alcohol yields
energy (7kca...
DIT 121 Study guide CHAPTERS 1-4 |
100% Correct | Verified | 2024 Version
1. Name the six classes of nutrients - ✔✔
1. Carbohydrate
2.Protein.
3.Fats
4.Vitamin
5.Mineral
6.Water
2. What is an essential nutrient? Explain why alcohol is not considered a nutrient. - ✔✔Alcohol yields
energy (7kcal/g) when metabolized, but alcohol is not considered a nutrient because it does not support
the growth, maintenance, and repair of the body.
3. Given a specific food, calculate the energy contribution (kcalories) from protein,
fat and carbohydrate. - ✔✔
Protein(4Kcal/g)
Carbohydrate(4Kcal/g)
Fat(9Kcal/g)
4. What credentials identify a "nutrition expert"? - ✔✔RD (Registered Dietitian)
undergraduate degree requiring 60 credit hours in nutrition, food service and other related subjects;
-1 year clinical internship or equivalent;
-pass Academy of Nutrition and Dietetics' national exam;
-maintain up-to-date knowledge and REGISTRATION)
, 6. Diagram and explain the "ChooseMyPlate" food guide logo. Summarize the major recommendations
for eating. - ✔✔ChooseMyPlate - Logo created by the USDA to illustrate the 5 food groups; to remind
consumers to make healthy food choices; and to choose a balanced, healthful, nutrient dense diet. It
divides a plate into 4 sections, each representing a food group with varying sizes that indicate a relative
portion for each group. A circle next to the plate represents the dairy group.
7. Trace the major steps of digestion and their function. Where is the major site of nutrient
digestion/absorption? - ✔✔1. )Food enters the mouth and travels down the esophagus and through the
upper and lower esophageal sphincters to the stomach, then though the pyloric sphincter to the small
intestine, on through the ileocecal valve to the large intestine, past the appendix to the rectum, ending
at the anus.
2. )Mouth- during chewing, teeth crush large pieces of food into smaller ones. Saliva contains
carbohydrase, an enzyme that hydrolyzes carbohydrates. After a mouthful of food has been chewed and
swallowed, it is called a bolus.
3. ) The stomach retains the bolus for a while in its upper portion. Little by litte, the stomach transifers
the food to its lower portion, adds juices to it, and grinds it to a semiliquid mass called chyme. It then
releases small amounts of chyme into the small intestine.
4. ) The small intestine is where nutrient absorption takes place.
5. ) intestine withdraws water from the chyme, making excretion easier.
Name the digestive enzymes that breakdown carbohydrates - ✔✔Carbohydrase
Name the digestive enzymes that breakdown lipids. - ✔✔Lipase
Name the digestive enzymes that breakdown proteins - ✔✔Protease
11. What carbohydrate is the sweetest? - ✔✔Fructose
12. How is carbohydrate stored in the body? - ✔✔Glycogen
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