Atrue statement about both myoglobin and hemoglobin protein is: select one: a. they have no obvious structural relationship b. they have nearly identical primary structures, but different quaternary structures c. very similar primary and tertiary structures. d. very similar tertiary structures, but different primary structures e. they have very different primary and tertiary structures.

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.