Fetal Haemoglobin And Myoglobin

Question 1

Myoglobin And

Answer 1

Fetal hemoglobin

Question 2

What is the primary function of fetal hemoglobin (HbF)?

Answer 2

Fetal hemoglobin transfers oxygen from maternal blood to fetal blood by having a higher affinity for oxygen than adult hemoglobin.

Question 3

How does fetal hemoglobin’s oxygen dissociation curve compare to adult hemoglobin?

Answer 3

The curve is shifted to the left, meaning it binds oxygen more readily and remains saturated at lower oxygen pressures.

Question 4

Why is fetal hemoglobin important for the fetus?

Answer 4

It allows oxygen transfer from the placenta, ensuring the fetus gets enough oxygen even at low oxygen concentrations.

Question 5

What is myoglobin, and where is it found?

Answer 5

Myoglobin is an oxygen-binding protein found only in muscles, where it stores oxygen for use during low oxygen availability.

Question 6

How does myoglobin’s oxygen affinity compare to hemoglobin

Answer 6

Myoglobin has a much higher affinity for oxygen than hemoglobin and releases it only when oxygen levels are very low.

Question 7

Why do diving mammals like whales and seals have high myoglobin concentrations?

Answer 7

Myoglobin allows them to store large amounts of oxygen in their muscles, helping them survive long dives underwater.

Question 8

How do fetal hemoglobin and myoglobin differ in function

Answer 8

Fetal hemoglobin helps transfer oxygen from the mother to the fetus.

Myoglobin stores oxygen in muscles for later use during exertion or low oxygen conditions.