Topic 2 The Respiratory System: Myoglobin vs Fetal Hemoglobin Curves

Question 1

• Has hyperbolic curve since structure doesn’t participate in allosteric cooperative binding due to single subunit shape

Answer 1

Myoglobin of muscle

Question 2

• Saturates quickly and releases in situations of low oxygen “emergency situations”

Answer 2

Myoglobin

Question 3

• Curve is shifted left of adult hemoglobin curve because structure has higher binding affinity in order to grab O2 from maternal blood

Answer 3

Fetal Hemoglobin

Question 4

• Carbon monoxide (CO) has a 200x greater affinity for hemoglobin than oxygen does [forms carboxyhemoglobin] and requires administration of pure O2 to displace it once bound

Answer 4

Note