Which statement describes an association between vitamin A and vision??
A) ?Retinoic acid is the form required for synthesis of retinoblasts.
B) ?Light causes retinal to shift from a cis to a trans configuration.
C) ?Retinol is the form bound to beta-carotene in the corneal membrane.
D) ?Pigment molecules in the retina are composed of a molecule of vitamin A bound to an omega-3 fatty acid.
B
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What will be an ideal response?
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a. zinc b. magnesium c. sodium d. iron e. potassium
Women with very low levels of body fat are at an increased risk for osteoporosis due to decreased levels of _____
a. progesterone b. estrogen c. vitamin A d. iron e. insulin
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a. True b. False Indicate whether the statement is true or false