Chapter 12, Problem 2CS

How is vitamin B12 absorbed?

Which of the following statements about insulin is true? Insulin acts as a transport protein, cany in g glucose across the cell membrane. Insulin facilitates the movement of inti acellular glucose transporters to the cell membrane. Insulin stimulates the breakdown of stored glycogen into glucose. Insulin stimulates the kidneys to reabsorb glucose into the bloodstream.

Which is a true statement about limiting nutrients in infancy? a. Iron supplementation is initiated when infants are six months of age. b. Vitamin D supplementation is needed in breastfed infants because the content is low in breast milk. c. Low intake of dietary fiber is a common cause of constipation in infants. d. Fluoride is not needed until teeth start erupting in late infancy.