WGU D440 CHAPTER 7: VITAMINS | COMPLETE STUDY GUIDE, PRACTICE
QUESTIONS & ANSWERS 2026/2027
What is the upper intake level (UL) of retinol for adults established by the Dietary Reference
Intake committee? - ✔✔3000 mcg/day pg. 89
What is the UL for pyridoxine for adults? - ✔✔100 mg/day pg. 102
The current DRI for calciferol for adults is? - ✔✔600 IU/day pg. 91
The UL for ascorbic acid is: - ✔✔2000 mg/day pg. 98
Why does the body rely on the frequent intake of foods rich in water-soluble vitamins? -
✔✔The body does not store water-soluble vitamins. Pg. 87
Which statement is most accurate regarding vitamins? - ✔✔Most vitamins are provided
through dietary intake. Pg. 87
Vitamin __ is the only vitamin synthesized in the body. - ✔✔D pg. 87
Which amount of micrograms (mcg) represents the daily recommended intake of biotin? -
✔✔30 pg. 106
The daily recommended intake of folate is: - ✔✔400 mcg pg. 106
The daily recommended intake of cobalamin is: - ✔✔2.4 mcg pg. 106
, Which individual will have the highest intake of phytonutrients? - ✔✔A person who eats whole
grains for breakfast daily. Pg. 108
Which snack food is the best source of phytonutrients? - ✔✔nuts pg. 108
Which system is affected by a vitamin A deficiency? - ✔✔ocular pg. 88
A patient states to the nurse "I eat plenty of grains and fruits to help prevent cardiovascular
disease, so I don't need a lot of vegetables." Which statement regarding this patient is accurate?
- ✔✔Vegetables should be added to obtain phytonutrients that some grains and fruits do not
have. Pg. 108
Which trait best indicates the specific photochemical a fruit or vegetable contains? - ✔✔Color
pg. 108
Fruits and vegetables of which color are the best source of the phytochemical anthocyanin? -
✔✔red/purple pg. 108
Which carotenoid found in yellow-green foods is specifically associated with the prevention of
age-related macular degeneration? - ✔✔zeaxanthin pg. 108
Which system is sensitive to a vitamin D deficiency? - ✔✔musculoskeletal (rickets,
osteomalacia) pg. 91
Which of the following is a fat-soluble vitamin? - ✔✔Vitamin A, D, E, K pg. 87
Which best describes the function of vitamin A? - ✔✔Maintains skin and the inner mucous
membranes. Pg. 88
QUESTIONS & ANSWERS 2026/2027
What is the upper intake level (UL) of retinol for adults established by the Dietary Reference
Intake committee? - ✔✔3000 mcg/day pg. 89
What is the UL for pyridoxine for adults? - ✔✔100 mg/day pg. 102
The current DRI for calciferol for adults is? - ✔✔600 IU/day pg. 91
The UL for ascorbic acid is: - ✔✔2000 mg/day pg. 98
Why does the body rely on the frequent intake of foods rich in water-soluble vitamins? -
✔✔The body does not store water-soluble vitamins. Pg. 87
Which statement is most accurate regarding vitamins? - ✔✔Most vitamins are provided
through dietary intake. Pg. 87
Vitamin __ is the only vitamin synthesized in the body. - ✔✔D pg. 87
Which amount of micrograms (mcg) represents the daily recommended intake of biotin? -
✔✔30 pg. 106
The daily recommended intake of folate is: - ✔✔400 mcg pg. 106
The daily recommended intake of cobalamin is: - ✔✔2.4 mcg pg. 106
, Which individual will have the highest intake of phytonutrients? - ✔✔A person who eats whole
grains for breakfast daily. Pg. 108
Which snack food is the best source of phytonutrients? - ✔✔nuts pg. 108
Which system is affected by a vitamin A deficiency? - ✔✔ocular pg. 88
A patient states to the nurse "I eat plenty of grains and fruits to help prevent cardiovascular
disease, so I don't need a lot of vegetables." Which statement regarding this patient is accurate?
- ✔✔Vegetables should be added to obtain phytonutrients that some grains and fruits do not
have. Pg. 108
Which trait best indicates the specific photochemical a fruit or vegetable contains? - ✔✔Color
pg. 108
Fruits and vegetables of which color are the best source of the phytochemical anthocyanin? -
✔✔red/purple pg. 108
Which carotenoid found in yellow-green foods is specifically associated with the prevention of
age-related macular degeneration? - ✔✔zeaxanthin pg. 108
Which system is sensitive to a vitamin D deficiency? - ✔✔musculoskeletal (rickets,
osteomalacia) pg. 91
Which of the following is a fat-soluble vitamin? - ✔✔Vitamin A, D, E, K pg. 87
Which best describes the function of vitamin A? - ✔✔Maintains skin and the inner mucous
membranes. Pg. 88
