Absorption of

 A. True If either is absent, undigested fat appears in the faeces.

B. True Maternal antibodies (globulins) in colostrum are so absorbed.

C. True Transport mechanisms are isomer-specific.

D. True An active carrier-mediated transport mechanism is involved which reduces the danger of iron toxicity with excessive intake.

E. False Most ingested sodium is absorbed; if absorption is above the body requirements, the excess is excreted by the kidneys.