Need an answer quick . red blood cells need iron. they store iron and typically contain more iron than the fluid around them does. which action would show the blood cells doing active transport? pushing iron out bringing iron in swelling shrinking

bringing iron in

Explanation:

RBCs are rich in iron content and have more iron than the surrounding fluid. Active transport is the process of movement of substances against the concentration gradient from the region of their lower concentration to that of higher concentration at the expense of energy. Higher internal concentration of iron of RBCs requires these cells to carry out active transport of iron from the surrounding fluid.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands