Which form of vitamin A is involved in vision?
A) carotenoids
B) preformed vitamin A
C) retinal
D) retinoic acid
Correct Answer:
Verified
Q1: What is the visual pigment that helps
Q2: Beta-carotene is LEAST plentiful in which food?
A)yellow
Q4: Why is the risk of toxicity greater
Q5: Which form of vitamin A has the
Q6: Vitamin A is essential for which of
Q7: What is required for fat-soluble vitamins to
Q8: Deficiencies of what two vitamins are common
Q9: When consumption of a macronutrient is insufficient,vitamin
Q10: Fat-soluble vitamins are transported from the intestine
Q11: Vitamin A is unstable when exposed to
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