When vitamin A is deficient,there is a delay in the regeneration of the visual pigment.Which statement is incorrect?
A) This condition is called night blindness.
B) This causes difficulty adapting to dim light after exposure to bright light.
C) This is one of the first signs of a vitamin A deficiency.
D) This condition is irreversible.
Correct Answer:
Verified
Q23: The action of sunlight on 7-dehydrocholesterol forms:
A)cholecalciferol.
B)retinol.
C)parathyroid
Q24: Xerophthalmia occurs from:
A)high intake of preformed vitamin
Q25: The primary function of vitamin D in
Q26: Which form(s)of vitamin A has antioxidant properties?
A)Carotenoids
B)Preformed
Q27: Vitamin D acts primarily in the:
A)skin and
Q29: When vitamin A is deficient,all of the
Q30: Vitamin A toxicity occurs most frequently when
Q31: Which is NOT considered a good dietary
Q32: Which statement about cholecalciferol is FALSE?
A)It is
Q33: What is the purpose of retinol activity
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