Which Statement About Myoglobin Is True

Multiple Choice

Which statement about myoglobin is true?

A) The lead-containing ring structure of the myoglobin molecule can bind to O₂.
B) It is found in muscle cells.
C) It has a lower affinity for O₂ than hemoglobin does.
D) Diving mammals have lower concentrations of myoglobin in their muscles.
E) Skeletal muscles are all similar in their myoglobin content.