Absorption of iron from plants is increased substantially if foods containing vitamin _____ are included in the same meal.
a. D
b. E
c. K
d. C
e. A
Question 2
Directly after oxygen attaches to iron in hemoglobin _____.
a. oxygen enters the lungs
b. carbon dioxide is released from iron in hemoglobin
c. oxygen enters the lungs
d. oxygenated hemoglobin is transported in blood to body cells
e. iron in hemoglobin picks up carbon dioxide from cells and transports it to the lungs
