Once absorbed, copper is bound to ________ for transport.
A) ceruloplasmin
B) albumin
C) transferrin
D) metallothionein
Ans: B) albumin
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Matt is a vegan. As a result of his diet, he consumes no sources of preformed vitamin A. Which of the following statements explains why he has not developed a deficiency of vitamin A?
A. Matt eats plenty of vitamin B-enriched cereal products. B. Matt's diet is rich in vitamin C, which reduces his need for vitamin A. C. Matt's diet supplies high amounts of beta-carotene. D. Matt's diet contain high amounts of tryptophan.
Smoking increases the risk of premature detachment of the placenta
Indicate whether the statement is true or false
Proteins synthesized and secreted by adipose cells are called ________.
Fill in the blank(s) with the appropriate word(s).
Which visual pigment is formed by the combination of retinal vitamin A and opsin that allows for perception of light?
a. retinol-bindingprotein b. rhodopsin c. retinoic acid d. keratin