What requirements are necessary for calcium to be absorbed through the ileum at concentrations of less than 5 mmol/L? (Select all that apply.)
A) Receptor site on the ileum
B) Vitamin D3
C) Vitamin K
D) Carboxypeptidase
E) A carrier protein

Question

Quizplus · Accepted Answer

At concentrations less than 5 mmol/L,calcium is transported actively across cell membranes,bound to a carrier protein.The carrier formation requires the presence of the active form of vitamin D3 (1,25-dihydroxyvitamin D).These selections are the only options relevant to the transport of calcium.

What Requirements Are Necessary for Calcium to Be Absorbed Through