In my guess try A. hope I tried my best if I’m wrong I am sorry for answering not correctly
I,3,4,7 hope this will help
Actively transport molecules across the cell membrane
B. 0.0357 wolves/mi
Divide the wolf # by the sq.mi.
Hemoglobin has tetrahedral structure containing four heme groups that surround a globin group.
Heme is ringlike organic compound also known as a porphyrin to which an iron atom is attached. There are four iron atoms that bind four oxygen atoms and transport them to tissues.
