Beta-carotene is also called ________.
A) provitamin A
B) retinal or retinol
C) calcitriol
D) rhodopsin
Correct Answer:
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Q1: Vitamin A deficiency is characterized by the
A)inability
Q5: When viewing items at night or in
Q6: Retinal,retinol,and retinoic acid are all forms of
A)
Q13: Rhodopsin,the visual pigment in the retina of
Q19: The biochemical functions of vitamin A include
Q26: Some scientists believe that vitamin D recommendation
Q31: Which statement correctly describes vitamin A?
A)Vitamin A
Q71: Magnesium deficiency is most often caused by
A)excessive
Q81: High amounts of _,especially from supplements,can cause
Q96: Over half of the body's magnesium is
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