試題詳解

6. A specialized function shared by the many cells lining the lungs and the lumen of the gut is _____.
(A) decreased oxygen demand due to the lack of oxygen in foods
(B) increased exchange surface provided by their membranes
(C) greater numbers of cell organelles contained within their cytoplasm
(D) greater protection due to increased cellular mass
(E) lowered basal metabolic rate due to cooperation between cells